How do you find the y intercept for y = x^2 - 4x + 4y=x24x+4?

2 Answers
Sep 28, 2015

The y-intercept is 44.

Explanation:

The y-intercept is the value of yy when x=0x=0. Therefore, substitute 00 for xx, and solve for yy.

y=x^2-4x+4y=x24x+4

y=0^2-4(0)+4=y=024(0)+4=

y=4y=4.

Sep 28, 2015

Y intercept is 4.

Explanation:

To find the Y-intercept, find the value of this function at x=0x=0

y=x^2−4x+4y=x24x+4
At x=0; y =(0^2)-(4.0)+4 = 4x=0;y=(02)(4.0)+4=4

At (0, 4)(0,4) the curve cuts the Y-axis.