💬 Interpreting Slope & Intercept: Mixed Practice & Reasoning (S-ID.C.7)
Paginepagineapp.comInterpret the slope and intercept of a linear model in context. Read each problem. Draw or write to solve. Label your answer.
1. T = 9x + 64, where T is savings in dollars and x is weeks. What do 9 and 64 mean?
Work
Answer: ______________
2. C = 4x + 7, where C is cost in dollars and x is months of a phone plan. What do 4 and 7 mean?
Work
Answer: ______________
3. h = 2x + 6, where h is plant height in cm and x is weeks. What do 2 and 6 mean?
Work
Answer: ______________
4. C = 17x + 71, where C is cost in dollars and x is months of a phone plan. What do 17 and 71 mean?
Work
Answer: ______________
5. T = 2x + 30, where T is savings in dollars and x is weeks. What do 2 and 30 mean?
Work
Answer: ______________
6. T = 21x + 44, where T is savings in dollars and x is weeks. What do 21 and 44 mean?
Work
Answer: ______________
Answer key: 1) 9 = increase per one of x (weeks); 64 = starting value when x = 0 · 2) 4 = increase per one of x (months of a phone plan); 7 = starting value when x = 0 · 3) 2 = increase per one of x (weeks); 6 = starting value when x = 0 · 4) 17 = increase per one of x (months of a phone plan); 71 = starting value when x = 0 · 5) 2 = increase per one of x (weeks); 30 = starting value when x = 0 · 6) 21 = increase per one of x (weeks); 44 = starting value when x = 0
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Worksheets › Grade 9 Math (Algebra I) › Interpreting Slope & Intercept › Interpreting Slope & Intercept
Grade 9 (ages 14–15)Numbers & mathsFree printable PDF
About this grade 9 worksheet
Free Grade 9 Algebra I math worksheet (Common Core S-ID.C.7): interpreting slope & intercept — mixed practice with space to reason and check, with answer key. Skill: Interpret the slope and intercept of a linear model in context. Level: Grade 9 — also suits Year 10 (UK).
For teachers: skills & standards
- CCSS S-ID.C.7: Interpret the slope and intercept of a linear model in context
- Works as a morning-work page, a centre/station activity, homework or an early-finisher task.
Frequently asked questions
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What age is it for?
It is designed for Grade 9 (ages 14–15), but use it with any child who is ready.
What skills does it build?
Interpret the slope and intercept of a linear model in context.
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More “Interpreting Slope & Intercept” printables (s-id.c.7: interpret the slope and intercept of a linear model in context)
Interpreting Slope & Intercept: Practice A (S-ID.C.7) · Interpreting Slope & Intercept: Practice B (S-ID.C.7) · Interpreting Slope & Intercept: Show Your Thinking (S-ID.C.7) · Interpreting Slope & Intercept: Quick Check (S-ID.C.7)
All 5 interpreting slope & intercept sheets → · Grade 9 Math (Algebra I): all 10 skills → · All Common Core grades
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