9th Grade Slope and Linear Equations Worksheet — Level 3 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 9th Grade linear relationships & graphs worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Linear Relationships & Graphs9th Grade Slope and Linear Equations Worksheet — Level 3 — Practice Set 4 — Answers
Show your work. Slope = rise ÷ run; the equation of a line can be written as y = (slope)x + (y-intercept).
- AYes
- BNo
Answer: No
Substitute x = 2: y = −5 × 2 + 7 = −3, not 0.
Answer: y = x − 2
- y = 1x + (y-intercept)
- −3 = 1 × (−1) + (y-intercept)
- y-intercept = −3 − (−1) = −2
- y = x − 2
- AYes
- BNo
Answer: No
Substitute x = 0: y = 2 × 0 + 5 = 5, not 3.
Answer: y = 4x − 5
- y = 4x + (y-intercept)
- −17 = 4 × (−3) + (y-intercept)
- y-intercept = −17 − (−12) = −5
- y = 4x − 5
Answer: slope 2; 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.
- AYes
- BNo
Answer: Yes
Substitute x = −1: y = 5 × (−1) + 9 = 4, which matches.
Answer: y = 3x − 6
- y = 3x + (y-intercept)
- −12 = 3 × (−2) + (y-intercept)
- y-intercept = −12 − (−6) = −6
- y = 3x − 6
Answer: y = −5x − 6
- y = −5x + (y-intercept)
- −1 = −5 × (−1) + (y-intercept)
- y-intercept = −1 − 5 = −6
- y = −5x − 6
Answer: slope −3; 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 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.
Marking tips
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