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Match domain and range values to the correct graph from A to L based on the given function criteria.

A math worksheet matching domain and range values to graphs labeled A-L, with each row containing domain, range, and function status (YES/NO).

A math worksheet matching domain and range values to graphs labeled A-L, with each row containing domain, range, and function status (YES/NO).

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Show Answer Key & Explanations Step-by-step solution for: Engaging students: Finding the domain and range of a function ...
Since the actual graphs labeled A to L are not visible in your message, I can't directly match the domains, ranges, and function status to specific graph letters. However, I can analyze each problem and describe what kind of graph would match each description. Once you have the graphs (A–L), you can use this analysis to identify the correct letter.

Let’s go through each one step by step:

---

1.


- Domain: $ \{-4 \leq x \leq 4\} $
- Range: $ \{-4 \leq y \leq 4\} $
- Function: NO

This means:
- The graph exists only between $x = -4$ and $x = 4$, inclusive.
- The $y$ values go from $-4$ to $4$, inclusive.
- But it is not a function, so there must be at least one vertical line that intersects the graph more than once (i.e., for some $x$, multiple $y$ values).
- Likely a non-function shape like a circle or sideways parabola within that box.

🔍 Look for a closed shape (like a circle) centered around origin with radius 4, or a horizontal "band" where multiple $y$ values exist for same $x$.
👉 Graph likely has symmetry across x-axis, e.g., a circle or ellipse.

---

2.


- Domain: $ \{-3 < x \leq 5\} $
- Range: $ \{y = -1\} $
- Function: YES

This means:
- $x$ goes from just above $-3$ to $5$, including $5$ but not $-3$.
- All $y$ values are exactly $-1$ → horizontal line at $y = -1$.
- It's a function because every $x$ maps to only one $y$.
- Graph is a horizontal line segment at $y = -1$, starting just right of $x = -3$, ending at $x = 5$.

🔍 Look for a horizontal line at $y = -1$, open circle at $x = -3$, closed at $x = 5$.
👉 Graph is a line segment on $y = -1$, with domain $(-3, 5]$.

---

3.


- Domain: $ \{-4 \leq x \leq 2\} $
- Range: $ \{-2 \leq y \leq 4\} $
- Function: YES

This means:
- Graph defined from $x = -4$ to $x = 2$, inclusive.
- $y$ values go from $-2$ to $4$, inclusive.
- It is a function, so passes vertical line test.
- Could be a line segment, parabola, or curve increasing/decreasing within bounds.

🔍 Look for a graph over interval $[-4, 2]$ with output from $-2$ to $4$, no vertical overlaps.

---

4.


- Domain: $ \{x > 0\} $
- Range: $ \{y = 4\} $
- Function: YES

This means:
- Only $x > 0$: starts at $x = 0$, open circle, goes to infinity.
- All $y = 4$: horizontal line at $y = 4$.
- Function: yes — single $y$ per $x$.
- So, horizontal ray at $y = 4$, starting just right of $x = 0$ and extending to the right.

🔍 Look for a horizontal line at $y = 4$, starting with an open circle at $(0,4)$, going right infinitely.

---

5.


- Domain: $ \{-6 \leq x \leq 6\} $
- Range: $ \{0 \leq y \leq 6\} $
- Function: YES

This means:
- Defined from $x = -6$ to $x = 6$, inclusive.
- $y$ from $0$ to $6$, inclusive.
- Is a function → passes vertical line test.
- Could be a semicircle, V-shape, or upward parabola symmetric about $y$-axis.

🔍 Look for a graph over $[-6,6]$, outputs from $0$ to $6$, no double $y$ values.
👉 Example: upper half of a circle centered at $(0,3)$, or a V-shaped graph.

---

6.


- Domain: $ \{x = -5\} $
- Range: $ \{-2 < y < 6\} $
- Function: NO

This means:
- Only one $x$-value: $x = -5$
- $y$ values go from just above $-2$ to just below $6$ → open interval
- But not a function → contradiction? Wait!

🛑 Important: If domain is only $x = -5$, then only one input. For a function, that input can map to only one output. But here, range is $(-2, 6)$ → many $y$ values at $x = -5$. So this cannot be a function.

So, the graph is a vertical line segment at $x = -5$, from $y = -2$ to $y = 6$, open at both ends.

But since multiple $y$ values for one $x$, it fails the vertical line test → not a function, which matches.

🔍 Look for a vertical line segment at $x = -5$, open circles at $y = -2$ and $y = 6$, spanning $(-2,6)$.

---

7.


- Domain: $ \{x \geq 0\} $
- Range: $ \{\text{all real numbers}\} $
- Function: NO

This means:
- $x$ starts at $0$, goes to infinity.
- $y$ covers all real numbers: $(-\infty, \infty)$
- Not a function → so must have at least one $x$ with multiple $y$ values.

This could be a sideways parabola opening left/right, or a vertical line, but domain is $x \geq 0$, so not a full vertical line.

Example: right half of a parabola opening left, i.e., $x = y^2$, $x \geq 0$

Then:
- Domain: $x \geq 0$
- Range: all real $y$
- But for $x > 0$, two $y$ values (positive and negative) → not a function

🔍 Look for a U-shaped curve opening to the right, starting at origin, going up and down.

---

8.


- Domain: $ \{-3 \leq x \leq 4\} $
- Range: $ \{-2 \leq y \leq 4\} $
- Function: NO

Same as #1: bounded domain and range, but not a function.

So again, must fail vertical line test.

Could be a circle, ellipse, or sideways U-shape within those bounds.

For example, a circle centered at $(0.5, 1)$ with radius ~3.5?

Or a semicircle but with both top and bottom parts? No — if it's a full circle, it's not a function.

But since domain is $[-3,4]$, range $[-2,4]$, and not a function → look for any non-vertical graph that has two $y$ values for some $x$.

🔍 Look for a closed curve or double-valued graph in that region.

---

9.


- Domain: $ \{\text{all real numbers}\} $
- Range: $ \{\text{all real numbers}\} $
- Function: YES

This means:
- Graph defined for all $x$, and all $y$ values are covered.
- And it is a function → so must pass vertical line test.

Examples:
- A straight line with nonzero slope (e.g., $y = x$)
- A cubic function like $y = x^3$
- Any continuous curve that goes from $-\infty$ to $\infty$ in both directions, without looping back vertically.

🔍 Look for a graph that extends infinitely in both $x$ and $y$ directions, and is one-to-one (no vertical overlap).

---

Now, let’s summarize the expected graph types for each:

| Problem | Description |
|--------|-------------|
| 1 | Closed shape (e.g., circle) in $[-4,4] \times [-4,4]$, not a function |
| 2 | Horizontal line at $y = -1$, $x \in (-3,5]$ |
| 3 | Curve over $[-4,2]$, $y \in [-2,4]$, function |
| 4 | Horizontal ray at $y = 4$, $x > 0$ |
| 5 | Graph over $[-6,6]$, $y \in [0,6]$, function |
| 6 | Vertical line segment at $x = -5$, $y \in (-2,6)$ |
| 7 | Right-opening parabola ($x = y^2$), $x \geq 0$, all $y$ |
| 8 | Non-function in $[-3,4] \times [-2,4]$, e.g., circle |
| 9 | Infinite graph, all real $x,y$, function (e.g., $y = x$) |

---

Final Step: Matching to Graphs A–L



You need to compare these descriptions with the actual graphs labeled A–L.

Here’s how to match:

- Graph A–L should include:
- Horizontal lines
- Vertical lines
- Parabolas (up/down/left/right)
- Circles/ellipses
- Line segments
- Rays
- Full curves

#### Use this strategy:
1. Look for horizontal lines → likely #2 or #4
- #2: $y = -1$, $x \in (-3,5]$
- #4: $y = 4$, $x > 0$
2. Vertical line → #6: $x = -5$, $y \in (-2,6)$
3. Right-opening parabola → #7
4. Full line → #9
5. Circle or oval → #1 or #8
6. Line segment or curve in limited domain → #3, #5

---

Example Matching (if you had the graphs):



Suppose:
- Graph B is a horizontal line at $y = -1$, from $x = -3$ (open) to $x = 5$ (closed) → #2
- Graph F is a vertical segment at $x = -5$, $y \in (-2,6)$ → #6
- Graph D is $x = y^2$, $x \geq 0$ → #7
- Graph J is $y = x$ → #9
- Graph A is a circle centered at origin, radius 4 → #1
- Graph E is a semicircle or V-shape over $[-6,6]$, $y \geq 0$ → #5
- Graph C is a horizontal ray at $y = 4$, $x > 0$ → #4
- Graph G is a curve over $[-4,2]$, $y \in [-2,4]$, passing vertical line test → #3
- Graph H is a circle or oval in $[-3,4] \times [-2,4]$, not a function → #8

---

Final Answer Format (you fill in letters):



```
______ 1.
______ 2.
______ 3.
______ 4.
______ 5.
______ 6.
______ 7.
______ 8.
______ 9.
```

Once you see the graphs, use the descriptions above to match.

If you can describe the graphs (A–L), I can help you assign the letters!
Parent Tip: Review the logic above to help your child master the concept of domain and range worksheet pdf.
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