If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?

Which system of linear inequalites is represented by the graph?

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?