SOLUTION: Hello, How do i fint the vertex and intercepts, and sketch its graph: g(x) = x^2 - 4x - 12 Thank you!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hello, How do i fint the vertex and intercepts, and sketch its graph: g(x) = x^2 - 4x - 12 Thank you!      Log On


   

Question 64705This question is from textbook algebra for college students
: Hello,
How do i fint the vertex and intercepts, and sketch its graph:
g(x) = x^2 - 4x - 12
Thank you! This question is from textbook algebra for college students

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-4x-12
(x-6)(x+2)
x-6=0
x=6 x intercept
x+2=0
x=-2 x intercept
x=6-2/2=4/2=2
y=2^2-2*4-12
y=4-8-12
y=-16 thus the vertex is(2,-16)
+graph%28+300%2C+200%2C+-15%2C+15%2C+-20%2C+15%2C+x%5E2-4x-12%29+ (graph 300x200 pixels, x from -15 to 15, y from -20 to 15, of function x^2-4x-12).
####################################################################
MERRY CHRISTMAS