Question

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

Answer 1

The y-intercept of the equation is the value of the variable y or in this case, f(x), when x is equated to zero. Out of all the choices presented in this item, if x is equated to zero, the first two terms will be equal to zero, leaving the third term only for the numerical value of f(x). 

From the choices presented, the answer would be f(x) = -x2 + 2x + 4. Thus, the answer is the third choice, C. 

Answer 2

Answer:

f(x) = –x2 + 2x + 4 therefor C