what are the values of y?

Question

y = x^2 -6x 

X

1

2

3

4

5

6

Answer 1

It would be easiest if you factor out x on the right side of the equation. Then, it will look like this: y = x*(x-6). From there, you can plug in the values of x and do the arithmetic from there. For example:

y = x*(x-6)
y = 1*(1-6)
y = 1*(-5)
y=-5

You can follow that setup for any of your values of y that you need to calculate. 

Answer 2

First simplify the equation by completeing the square, moving everything over to left hand side but keeping your = where it is. Factor the left side and simplify the right. Now use the replacement method of inserting the values given to you for X,which will give you your Y. Graph as you go. 

YouTube has excellent videos for how to do it if you need a visual step by step.