SOLUTION: Given the function f(x) = -3x^2 - 6x - 6, is the point (-1, -3) on the graph of f?

Algebra ->  Coordinate-system -> SOLUTION: Given the function f(x) = -3x^2 - 6x - 6, is the point (-1, -3) on the graph of f?       Log On


   

Question 1043266: Given the function f(x) = -3x^2 - 6x - 6, is the point (-1, -3) on the graph of f?
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
Substitute x = -1 into f(x)
f(x) = -3(x)^2 - 6x - 6
f(-1) = -3(-1)^2 - 6(-1) - 6
f(-1) = -3 + 6 - 6
f(-1) = -3 (y = -3)
So, yes point (-1, -3)lies
on the graph of f(x).
Hope this helps :-)