Functions Test Prep

1.

The table above shows a relationship between $x$ and $f(x)$. Which of the following equations describe that relationship?

(A) $f(x)=-2x+6$

(B) $f(x)=4x-10$

(C) $f(x)=x-8$

(D) $f(x)=-2x+1$

(E) $f(x)=-3x+4$

2. For which of the following functions is $g(-5)>g(5)$?

(A) $g(x) = x^3$

(B) $g(x) = x^2-x$

(C) $g(x) = 4x -9$

(D) $g(x) = |x^3|$

(E) $g(x) = (-2x + x)^2$

3. The figure above shows the graph of the function $h(x)$. Which of the following $h(x)$ values has only one $x$?

(A) $h(x)=-5$

(B) $h(x)=-1$

(C) $h(x)=1$

(D) $h(x)=4$

4. If $f(x)= 8x^2-4x+7$, find $f(-3)$.

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