7(2 + 6 – 4d) = pl help me I don’t get it

Answer these questions showing your work plz

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.

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?