Linear functions SAT question

Math · Algebra · Easy · Answer it here, explanation included.

The function $h$ is defined by $h (x) = 3 x - 7$ . What is the value of $h (- 2)$ ?

ExplanationShow

Choice A is correct. The value of $h (- 2)$ can be found by substituting $- 2$ for $x$ in the equation defining $h$ . Substituting $- 2$ for $x$ in $h (x) = 3 x - 7$ yields $h (- 2) = 3 (- 2) - 7$ , or $h (- 2) = - 13$ . Therefore, the value of $h (- 2)$ is $- 13$ .

Choice B is incorrect. This is the value of $h (- 1)$ , not $h (- 2)$ .

Choice C is incorrect and may result from conceptual or calculation errors.

Choice D is incorrect and may result from conceptual or calculation errors.

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