ANSWER: Y=2x+1. The formula of ur answer would be in y=mx+b. Since it is parallel to 2x+3y=15, the m would have to be the same. Therefore m =2. Next we find b. We would plug in the points (-3,-5) in the formula y=mx+b to find B knowing m= 2 so -5=2(-3)+b. B=1.