Answer:
(x) = 
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = 5x + 4 ( subtract 4 from both sides )
y - 4 = 5x ( divide both sides by 5 )
= x
change x to
(x) and y back to x, thus
(x) = 
Answer:
yessir
Step-by-step explanation:
nba
Answer:
The vertex is at (1, -108).
Step-by-step explanation:
We have the function:

And we want to find its vertex point.
Note that this is in factored form. Hence, our roots/zeros are <em>x</em> = 7 and <em>x</em> = -5.
Since a parabola is symmetric along its vertex, the <em>x-</em>coordinate of the vertex is halfway between the two zeros. Hence:

To find the <em>y-</em>coordinate, substitute this back into the function. Hence:

Therefore, our vertex is at (1, -108).