9th Grade Slope and Linear Equations Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 9th Grade linear relationships & graphs worksheet.
9th Grade Slope and Linear Equations Worksheet — Level 1 — Practice Set 3 — Answers
Show your work. Slope = rise ÷ run; the equation of a line can be written as y = (slope)x + (y-intercept).
Answer: slope −3; y-intercept −7
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: −2
- slope = rise ÷ run = (2 − 0) ÷ (−2 − (−1))
- = 2 ÷ −1 = −2
Answer: slope 2; y-intercept 1
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 5; y-intercept −1
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: −2
- slope = rise ÷ run = (−2 − 2) ÷ (8 − 6)
- = −4 ÷ 2 = −2
Answer: slope −3; y-intercept 0
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: −3
- slope = rise ÷ run = (18 − 3) ÷ (−9 − (−4))
- = 15 ÷ −5 = −3
Answer: slope −4; y-intercept 6
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 −3; y-intercept 3
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: 1
- slope = rise ÷ run = (1 − 4) ÷ (−7 − (−4))
- = −3 ÷ −3 = 1
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.