A triangle has a perimeter of 56
inches. The medium side is
7 more than the short side, and the longest side is
5 times the length of the shortest side. Find the shortest side.

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

Having a hard time understanding this question (see attachment).

5. write an equation for the line that is parallel to the given line and that passes through the given point. y = –5x + 3; (–6, 3)