{(2,9), (2,8), (-3,7), (-3,6)} is what type of relation?

Can someone me i’m confused. will give brainliest and a whole bunch of points

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Which equation is equivalent to the given expression? -(1/2y+1/4) a. -1/4(1+2y) b. 1/4(2y-1) c. -2(1/4y-1/8) d. 2(1/8-1/4y)