Which point on the number line represents the additive inverse of -3/4 ?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)