Question

The graph of which function will have a maximum and a y-intercept of 4?

Answer 1

Answer:

f(x) = -x² + 2x + 4

Step-by-step explanation:

We have quadratic functions f(x) = ax² + bx + c.

c - y-intercept

If a > 0, then a parabola opens up and has a minimum in a vertex.

If a < 0, then a parabola opens down and has a maximum in a vertex.

The function has maximum and y-intercept of 4:

a < 0 and c = 4