How can i explain how i solved the answer?

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

With alll of except for the 2 that i did already

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12