The equation is y=5/2x - 15 or if solving for X is -6 Step-by-step explanation: In terms of y=mx+b, we are to make the Y by itself. Step 1. -2y = -5x +30 Make y become positive! Step 2. 2y = 5x - 30 Distribut the 2 over to make it 1y. Step 3. 1y = 5/2x - 15 The equation is y=5/2x - 15 If you are to find X it would be.... -15 divided by 2.5 gets you x= -6