The point Q has coordinates (2, 3) The point R has coordinates (a, b)
Aline perpendicular to QR is given by the equation 5x + 2y = 9
Find an expression for b in terms of a.

Analyze the solution below. 7 3 x = −2 7 3 x(3 7 ) = −2(3 7 ) x = − 6 7 what property was used to solve the equation? property of opposites division property of equality addition property of equality multiplication property of equality