Slope Worksheets - Free Printable

Let’s go through each graph one by one and figure out the slope type: positive, negative, zero, or undefined.

Remember:
- Positive slope → line goes UP as you move from left to right (like climbing a hill).
- Negative slope → line goes DOWN as you move from left to right (like sliding down).
- Zero slope → horizontal line (flat, no rise).
- Undefined slope → vertical line (straight up/down — can’t calculate slope because there’s no run).

Now let’s look at each numbered graph:

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Graph 1: Line goes from bottom-left to top-right → rising → positive

Graph 2: Line goes from top-left to bottom-right → falling → negative

Graph 3: Horizontal line → flat → zero

Graph 4: Vertical line → straight up/down → undefined

Graph 5: Vertical line → straight up/down → undefined

Graph 6: Line goes from bottom-left to top-right → rising → positive

Graph 7: Line goes from bottom-left to top-right → rising → positive

Graph 8: Horizontal line → flat → zero

Graph 9: Line goes from top-left to bottom-right → falling → negative

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Let me double-check each one quickly:

1. Rising? Yes → positive ✔
2. Falling? Yes → negative ✔
3. Flat? Yes → zero ✔
4. Vertical? Yes → undefined ✔
5. Vertical? Yes → undefined ✔
6. Rising? Yes → positive ✔
7. Rising? Yes → positive ✔
8. Flat? Yes → zero ✔
9. Falling? Yes → negative ✔

All match!

Final Answer:
1. positive
2. negative
3. zero
4. undefined
5. undefined
6. positive
7. positive
8. zero
9. negative