What is the slope of the line graphed below ? Can someone help me !

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Ribbon a is 1/3 meters long. it is 2/5 meters shorter than ribbon b. what's the total length of 2 ribbons?

What is the scale factor of this dilation? a) 1/2 b) 1/3 c) 2 d) 3