Answer Key — 8.SP.A.3
For parents and tutors
Do not share with students before practice tests.
Practice Problems — Sets 1–10
| Set | Guidance | | --- | --- | | Set 1 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 2 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 3 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 4 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 5 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 6 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 7 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 8 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 9 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 10 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. |
Practice Problems — Sets 11–20
| Set | Guidance | | --- | --- | | Set 11 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 12 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 13 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 14 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 15 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 16 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 17 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 18 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 19 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. | | Set 20 | Use the equation of a linear model to solve problems in the context o… — verify written work and accept reasonable drawings. |
Review tiers 1–10
- Checklists are parent-judged.
- Written items: verify against practice set patterns.
- Standard text: Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept. For example, in a linear model for a biology experiment, interpret a slope of 1.5 cm/hr as meaning that an additional hour of sunlight each day is associated with an additional 1.5 cm in mature plant height.
Practice test scoring
| Tier | Pass guidance | | --- | --- | | 1–3 | Most oral tasks smooth; majority of written correct | | 4–6 | 7/10+ total with clear understanding | | 7–8 | 9/12+ with explanations | | 9–10 | Near-perfect; ready to move on |
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