Please help me with this, I have no idea what I’m doing

#6 the slope is 2

#8 is A

Step-by-step explanation:

#6 use rice over run which would be 5 over 2 1/2 and would equal 2

#8 You could just graph it to equal the graph

A line is perpendiculat to another which has a slope of m if the perpendicular line has a slope of -1/m.
That means that if the product of slopes of two lines is -1, the two lines are perpendicular.

Here, y1=-7/4x, or m=-7/4
The perpendicular should have a slope of -1/m=-1/(-7/4)=4/7