Question

An equation has the a value = 5 , B value = 8, and C value = -4. what is the y intercept? please help i need fast help :(

Answer 1

ANSWER

$y=-4$

EXPLANATION

We want to find the y-intercept of the equation in question.

The general form of a quadratic equation is:

$y=ax^2+bx+c$

A quadratic equation with a = 5, b = 8 and c = -4 can therefore be written as:

$y=5x^2+8x-4$

The y-intercept is the value of y when x = 0.

Therefore, the y-intercept is:

$\begin{gathered} y=5(0)^2+8(0)-4 \\ y=0+0-4 \\ y=-4 \end{gathered}$