Can someone help me please I will give you five out of five stars

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

If the equation of a perpendicular bisector of a triangle is y = 2x + 7, what is the slope of the side that it is bisecting? explain how you know. 

20 if (08.02 mc) a of is : y = 6x − 4 y = 5x − 3 a: in ,of .y-on to . (6 ) b: is to of ? (4 )