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OpenStudy (anonymous):
Solve the system of equation by graphing: y=-2x-10 y=5x+11 Answer: (x,y)=
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OpenStudy (zale101):
Would you like to solve this by using substitution?
OpenStudy (zale101):
Solve for one variable (let's say y), then plug in on the other y variable for the other equation...
OpenStudy (anonymous):
Yes
OpenStudy (anonymous):
Answer? ?
OpenStudy (zale101):
Does it make sense on the instruction i gave?
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jimthompson5910 (jim_thompson5910):
To do this by graphing, you'd graph each equation on the same xy axis. You can use pencil/paper or technology like desmos http://www.desmos.com/calculator
jimthompson5910 (jim_thompson5910):
the point where the two lines cross is the solution as an ordered pair
OpenStudy (anonymous):
y=10
OpenStudy (anonymous):
Then substitute y=10 into the equation to find x
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