# SOLUTION: 4. 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 123342: 4. 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 Answer by jim_thompson5910(28548)   (Show Source): You can put this solution on YOUR website!# 4 If we have the solution (-3,4) , this means that and Let's solve for b: Start with the first equation Plug in and Multiply 5 and -3 to get -15. Multiply 7 and 4 to get 28. Add -15 to 28 to get 13 --------------------- So our first answer is --------------------- Now let's solve for m: Start with the second equation Plug in and Multiply m and -3 to get . Subtract 4 from both sides Divide both sides by -3 --------------------- So our second answer is --------------------- -------------------------------- Summary: So our answers are: and