Is (-1,-2)a solution of 3x+7y=-8

⚑ Flag

Well...If (x,y) = (-1,-2) then your question is, essentially:Does 3(-1)+7(-2)=-8 ?That'll be -3+-14 then, which is -17This does not equal -8, so (-1,-2) is not a solution to your equation.To find a solution, isolate Y (or x, you choose) and evaluate for any of your choice of numbers:3x+7y=-87y= -8-3xy=(-8-3x)/7y= -8/7 - 3x/7