Year 8 Gradient and Linear Equations Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 8 linear relationships & graphs worksheet.
Year 8 Gradient and Linear Equations Worksheet — Level 1 — Practice Set 3 — Answers
Show your working. Gradient = rise ÷ run; the equation of a line can be written as y = (gradient)x + (y-intercept).
Answer: 3
- gradient = rise ÷ run = (−11 − 1) ÷ (−8 − (−4))
- = −12 ÷ −4 = 3
Answer: 2
- gradient = rise ÷ run = (−15 − (−5)) ÷ (−3 − 2)
- = −10 ÷ −5 = 2
Answer: 3
- gradient = rise ÷ run = (−1 − 2) ÷ (4 − 5)
- = −3 ÷ −1 = 3
Answer: −2
- gradient = rise ÷ run = (6 − 4) ÷ (5 − 6)
- = 2 ÷ −1 = −2
Answer: 2
- gradient = rise ÷ run = (7 − (−3)) ÷ (7 − 2)
- = 10 ÷ 5 = 2
Answer: 2
- gradient = rise ÷ run = (−4 − (−2)) ÷ (−4 − (−3))
- = −2 ÷ −1 = 2
Answer: gradient −3; y-intercept 5
In y = (gradient)x + (y-intercept), the number multiplying x is the gradient and the constant is where the line crosses the y-axis.
Answer: gradient −1; y-intercept 7
In y = (gradient)x + (y-intercept), the number multiplying x is the gradient and the constant is where the line crosses the y-axis.
Answer: gradient −4; y-intercept −7
In y = (gradient)x + (y-intercept), the number multiplying x is the gradient and the constant is where the line crosses the y-axis.
Answer: −3
- gradient = rise ÷ run = (6 − 3) ÷ (−5 − (−4))
- = 3 ÷ −1 = −3
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.
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