here is what i need to do_
''Rewrite the following functions in the form y=a(x-h)^2+k.Find the vertex.''
here is my problem_
y = x^2 + 4x - 9
I tried to learn this but i just can't...my teacher is 2 lazy and not willing to spend any extra time with me. Also not a single stundent in my class knows this stuff. so please HELP! This is my last test and if i dont pass it i will have 2 go to summer school or even worse.
here some more problems_( i know these will be on a test)
y = x^2 - 6x + 16
y = x^2 - 8x - 1
y = x^2 + 5x + 2