Question 71132

Our approach will be to plug the solution into the equations and solve for b and m:

5(-3)+7(4)=b
-15+28=b
b=13

and:

m(-3)+4=22  subtract 4 from both sides
-3m=22-4
-3m=18  divide both sides by -3
m=-6

So our equations are:

 5x+7y=13
 -6x+y=22

You can verify that (-3,4) is the solution


Hope this helps----ptaylor