Question

What are the x-intercept(s) of the graph of y + 20 = x^2 − x

Answer 1

That (is you rearrange it) will look like a parabolic function. If you can get it in vertex form and determine whether it opens up or down, you can see where any zeroes might lie. Basically, find out if there really are x intercepts first

Answer 2

there are x intercepts

Answer 3

i didnt do the quadratic but i know that there are definitely x intercepts bc it is multiple choice

Answer 4

set y=0 and solve for x, you will need to use the quadratic equation. The results will be imaginary as there is no real x intercept for that parabola

Answer 5

heres the options
(−5, 0) and (4, 0)

(5, 0) and (−4, 0)

(−5, 0) and (−4, 0)

(5, 0) and (4, 0)

Answer 6

I copied the problem onto my sheet wrong, sorry. x^2-x instead of x^2+x

Answer 7

so , set y=0 \[0 = x^2-x-20\]

Answer 8

factor and BAM solutions pop out

Answer 9

Set the factors = 0 and solve x , e.g (x-5) x-5=0, so x=5 Then plug the zeroes into the (x,y) and that's it.

Answer 10

so the answer is (5, 0) and (−4, 0)?

Answer 11

You got it.