8. In figure 3, the graph is described by_
A. $f(x) = 2(x+1)^2 - 1$
B. $f(x) = -2(x+1)^2 - 1$
C. $f(x) = 2(x-1)^2 - 1$
D. $f(x) = -2(x-1)^2 - 1$
9. In figure 3, what is the vertex of the graph?
A. $(0, -1)$
B. $(0, 1)$
C. $(1, 1)$
D. $(-1, -1)$
10. The maximum number of zeros/roots of the quadratic function is_
A. 0
B. 1
C. 2
D. 3
11 What is the equation of the quadratic function when the zeros are 3 and 1?
A. $f(x) = x^2 - 4x + 3$
B. $f(x) = x^2 - 4x - 3$
C. $f(x) = x^2 + 4x + 3$
D. $f(x) = x^2 + 4x - 3$
12. In the function $f(x) = x^2 + x - 6$, what is the sum and product of the zeros
respectively?
A. 1 and -6
B. -1 and -6
C. -1 and -6
D. -1 and 6