Quadratics (factoring, solving, etc)
How do you find the x-intercepts in factored form?
flip the sign or r and s
How do you find the x-intercepts in vertex form?
Set y to 0, isolate x, use square root method
How do you find x-intercepts in standard form?
Use the quadratic formula or factor
How do you find the vertex in factored form?
x= r+s/2, y=answer to x subbed in
How do you find the vertex in vertex form?
x=d (sign flipped), y=c
How do you find the vertex in standard form?
x=-b/2a, y=ansewr of x subbed in (or - complete the square!)
What does it mean if the discriminant > 0
2 x-intercepts
What does it mean if the discriminant < 0
No x-intercepts
What does it mean if the discriminant = 0
1 x-intercept
What is the discriminant?
b^2-4ac
What should you do to check your work?
graph