Witch statement is true? Help asap

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

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.

What is r i 4.5+10r=-6.5 with work pls