2. Let f(x)=ax^2+bx+c. What is the coordinate of the y-intercept of f(x)?

Question

A. (0, -c )
B. (-b/2a,c)
C. (0,c)
D. (-b/2a,-c)
3. What is the vertex and x-intercept(s) of the function f(x)=x^2−2x−3?
A. The vertex is at (−1,−4) and the x-intercept is at (0,−3) .
B. The vertex is at (1,−4) and the x-intercepts are at (−1,0) and (3, 0)
C. The vertex is at (1,−4) and the x-intercept is at (0,−3) .
D. The vertex is at (−1,−4) and the x-intercepts are at (−1,0) and (3, 0)

Answer 1

2. The coordinate of the y-intercept of f(x) is (0, c).

3. The vertex is at (1,-4) and the x-intercepts are at (-1,0) and (3,0).