Help please!! Im confused on what to do

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Solve the system of equations y= 3/2 - 1, -x+ y =-3

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex