What at are the intercepts of the equation x-1/2y+3/2z=3?

Based on the graph, what is the initial value of the linear relationship? a coordinate plane is shown. a line passes through the y-axis at -2 and the x-axis at 3.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?