Let's solve each problem step by step.
---
Problem 1:
We are given a table of points:
| x | y |
|---|---|
| 2 | 2 |
| 3 | 0 |
| 4 | -2 |
| 5 | -4 |
We need to find the
slope of the line that passes through all these points.
####
Step 1: Recall the slope formula
The slope $ m $ between two points $ (x_1, y_1) $ and $ (x_2, y_2) $ is:
$$
m = \frac{y_2 - y_1}{x_2 - x_1}
$$
We can pick any two points from the table. Let’s use the first two:
- Point A: $ (2, 2) $
- Point B: $ (3, 0) $
$$
m = \frac{0 - 2}{3 - 2} = \frac{-2}{1} = -2
$$
Now let’s check with another pair to make sure the slope is consistent.
Use $ (3, 0) $ and $ (4, -2) $:
$$
m = \frac{-2 - 0}{4 - 3} = \frac{-2}{1} = -2
$$
Another pair: $ (4, -2) $ and $ (5, -4) $:
$$
m = \frac{-4 - (-2)}{5 - 4} = \frac{-2}{1} = -2
$$
✔ All slopes are
-2, so the slope is consistent.
####
✔ Answer for Problem 1: $ \boxed{-2} $
---
Problem 2:
Given table:
| x | y |
|---|---|
| 4 | 1 |
| 8 | 5 |
| 12 | 9 |
| 16 | 13 |
| 20 | 17 |
| 24 | 21 |
Again, we'll use the slope formula.
Pick the first two points:
- $ (4, 1) $ and $ (8, 5) $
$$
m = \frac{5 - 1}{8 - 4} = \frac{4}{4} = 1
$$
Check next pair: $ (8, 5) $ and $ (12, 9) $
$$
m = \frac{9 - 5}{12 - 8} = \frac{4}{4} = 1
$$
Next: $ (12, 9) $ and $ (16, 13) $
$$
m = \frac{13 - 9}{16 - 12} = \frac{4}{4} = 1
$$
Continue: $ (16, 13) $ and $ (20, 17) $
$$
m = \frac{17 - 13}{20 - 16} = \frac{4}{4} = 1
$$
Last: $ (20, 17) $ and $ (24, 21) $
$$
m = \frac{21 - 17}{24 - 20} = \frac{4}{4} = 1
$$
✔ Slope is consistently
1.
####
✔ Answer for Problem 2: $ \boxed{1} $
---
✔ Final Answers:
1. $ \boxed{-2} $
2. $ \boxed{1} $
These are both defined linear relationships with constant slopes.
Parent Tip: Review the logic above to help your child master the concept of finding slope from a table worksheet.