AlgebraHardInput giving a required output
Algebra practice question
For a linear function h, h(2) = 7 and h(5) = 16. For what value of x is h(x) = 1?
Answer: 0
The slope is (16 − 7)/(5 − 2) = 3, so h(x) = 3x + 1, and 3x + 1 = 1 gives x = 0.
Common wrong answers
- If you answered 1
- 1 is h(0), not the x-value.
- If you answered 3
- 3 is the slope.
- If you answered -2
- −2 uses the wrong intercept.
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