The range for the given domain of the function f(x)=3x-6/x+4.5 is

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

What is the area of a rectangle with vertices (-8,-2), (-3,-2), (-3,-6), and (-8,-6)? units