214k views
2 votes
Xintercept for the quadratic function f(x)=x²-8x

2 Answers

5 votes

Answer:

x=0 and x=8

Explanation:

The x-intercept is on the x-axis, so we must find x when y=0. f(x) is basically y and y=0, so 0=x^2-8x= x(x-8). For x(x-8) to equal 0, either x is equal to 0 (x=0) or x-8 is equal to 0 (so x is equal to 8). So the two intercepts are x = 0 and x = 8.

I hope this helped! :)

User JungleMan
by
9.0k points
3 votes
The x intercept would be zero since every number is paired with an x value
User Mlwn
by
7.2k points