Question

For the equation y = 9x -3 determine whether the following points are solutions Is (-8,-75) a solution of the equation? Is (7,-2) a solution of the equation?

Answer 1

Put `x=-8` into the equation
`=> y=-72-3 => y=-75` so (-8,-75) is a solution.

Put `x=7` into the equation
`=> y=63-3 => y=60` so (7,-2) is not a solution