Find the slope of the line.
9x + y=9

How many $20 bills do you need to have to make $280

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1