SOLUTION: alrighty.. i dont have any directions but i have this y = x squared- 2x- 8 and i have multiple choiceand i need to know 2 x intercepts and 1 y intercept thank you

Algebra ->  Coordinate-system -> SOLUTION: alrighty.. i dont have any directions but i have this y = x squared- 2x- 8 and i have multiple choiceand i need to know 2 x intercepts and 1 y intercept thank you      Log On


   

Question 46113: alrighty.. i dont have any directions but i have this
y = x squared- 2x- 8
and i have multiple choiceand i need to know 2 x intercepts and 1 y intercept
thank you
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
y+=+x%5E2+-+2x+-+8
y-intercept:
y+=+0%5E2+-+2%280%29+-+8+=+-8
(0,-8)
x-intercept:
0+=+x%5E2+-+2x+-+8
0+=+%28x+-+4%29%28x+%2B+2%29
x - 4 = 0
x = 4
(4,0)
and
x + 2 = 0
x = -2
(-2,0)
graph%28600%2C600%2C-10%2C10%2C-10%2C10%2Cx%5E2-2x-8%29