SOLUTION: Help I cannot get this :) Find values for m and b in the following system so that the solution to the system is (3, 4). 5x+7y=b mx+y=22

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Question 96709: Help I cannot get this :)
Find values for m and b in the following system so that the solution to the system
is (3, 4).
5x+7y=b
mx+y=22
Found 2 solutions by scott8148, kev82:
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
just plug in the values for x and y

5(3)+7(4)=b ... 15+28=b ... 43=b

m(4)+4=22 ... 4m=18 ... m=4.5 or 9/2

Answer by kev82(151) About Me  (Show Source):
You can put this solution on YOUR website!
Hi,

This is basically asking you, for what values of m and b, are these equations true if x=3 and y=4.

Well, let's put x=3 and y=4 into the equations and see what we get:

5%2A3+%2B+7%2A4+=+b
m%2A3+%2B+4+=+22
Can you solve these equations?