Algebra practice question

Answer: 2

The slope is (−3 − 5)/(6 − 2) = −2, so f(x) = −2x + 9. Then f(10) = −11 and f(−2) = 13, and their sum is 2.

Common wrong answers

If you answered 13

13 is f(−2) alone.

If you answered -11

−11 is f(10) alone.

If you answered -2

−2 is the slope.

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