9th Grade Slope and Linear Equations Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 9th Grade linear relationships & graphs worksheet.
9th Grade Slope and Linear Equations Worksheet — Level 2 — Practice Set 2 — Answers
Show your work. Slope = rise ÷ run; the equation of a line can be written as y = (slope)x + (y-intercept).
Answer: 2
- slope = rise ÷ run = (−4 − (−6)) ÷ (3 − 2)
- = 2 ÷ 1 = 2
Answer: slope −6; y-intercept −4
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
Answer: −
- slope = rise ÷ run = (−4 − 4) ÷ (2 − (−1))
- = −8 ÷ 3 = −
Answer: 3
- slope = rise ÷ run = (−8 − (−5)) ÷ (0 − 1)
- = −3 ÷ −1 = 3
Answer: y = −x − 2
- y = −1x + (y-intercept)
- −4 = −1 × 2 + (y-intercept)
- y-intercept = −4 − (−2) = −2
- y = −x − 2
Answer: −
- slope = rise ÷ run = (−3 − 1) ÷ (0 − (−5))
- = −4 ÷ 5 = −
Answer: y = −x − 2
- y = −1x + (y-intercept)
- −6 = −1 × 4 + (y-intercept)
- y-intercept = −6 − (−4) = −2
- y = −x − 2
Answer: slope 3; y-intercept −5
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
Answer: slope 1; y-intercept −8
In y = (slope)x + (y-intercept), the number multiplying x is the slope and the constant is where the line crosses the y-axis.
Answer: y = 5x
- y = 5x + (y-intercept)
- −10 = 5 × (−2) + (y-intercept)
- y-intercept = −10 − (−10) = 0
- y = 5x
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.