Question

find the value of a, given that the maximum value of the function
\ax{2}+3x+4
is 5.

Answer 1

find the value of a, given that the maximum value of the function
f(x)=\[ax ^{2}+3x+4\] is 5.

Answer 2

it is a quadratic, parabola, the max is y=5, so the vertex is at (x,5),

Answer 3

since it has a maximum , you know a must be negative, since the thing opens down