Is this a quadratic equation? And how do i solve if it is?
y = x2 − 4x

Question

Is this a quadratic equation? And how do i solve if it is?
y = x2 − 4x

anonymous · Answer

A quadratic equation is one in the form of:
y=Ax^2 +Bx + C.
Given the equation you have provided, it is a quadratic.
That is, for y=x^2 - 4x, A=1, B=-4 and C=0. 
Basically what I'm trying to say here is : it is a quadratic.
Now by solve, I'm going to assume you're asking how to find it's x-intercepts.
We do this by letting y=0. That is:
x^2 -4x=0
-> x(x-4)=0
Hence the values of x which satisfy this equation are x=0 and x=4.

anonymous · Answer

x or (x-4) =0 so values are 0 or 4

anonymous · Answer

what is the vertex of it then?

anonymous · Answer

@jimswig88  @extremity

anonymous · Answer

|dw:1363355910199:dw|    is that how it should look to solve the vertex then?