Answer:-2Step-by-step explanation:Isolate the variable y. Note the equal sign, what you do to one side, you do to the other. Divide 3 from both sides: (3y)/3 = (15 - 6x)/3y = (15 - 6x)/3y = 5 - 2xNote the equation: y = mx + bm = slopeb = y-interceptx & y = the point (x , y)Note that the slope is directly next to x. -2 is your answer.~