Exercises: Understand Graphs of Equations

Show all substitution work when verifying points. For graphing problems, generate a table of values before plotting.

Grade 9·23 problems·~30 min·Common Core Math - HS Algebra·standard·hsa-rei-d-10

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Warm-Up: Review What You Know

These problems review skills you already have.

A student says the ordered pair $(2, 7)$ satisfies the equation $y = 3x + 1$ .
Is the student correct?

Yes, because $3(2) + 1 = 7$ .

No, because $2 + 7 \neq 1$ .

Yes, because $2 + 7 = 9$ and $3 + 1 = 4$ .

No, because $3(7) + 1 \neq 2$ .