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OpenStudy (anonymous):
What is the solution to the system of equations? 3x-4y=19 y=2x-11 a. (5,-1) b. (-5,-21) c. (5,1) d. (-5,-8.5) please show work! also please tell the method you used to solve it! thanks!
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OpenStudy (anonymous):
ok put 2x-11 in for y in the top equation to start with. 3x-4(2x-11)=19
OpenStudy (anonymous):
distribute the 4 3x-8x-44=19 -5x-44=19
OpenStudy (anonymous):
solve for x -5x-44=19 -5x=25 x=-5
OpenStudy (anonymous):
then substitute -5 for x in your second equation and solve y= 2(-5)-11 y=-10-11 y=-21 and that's it
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