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Solve the system

y = x + 4

3y = -2x + 2

 Jul 13, 2020
 #1
avatar+783 
+2

y=x+4 multiplied by 3 is 3y=3x+12. We can subtract the second equation from the first to get 0=5x+10. Then we solve for x.

 

0=5x+10

5x=-10

x=-2

 

Then we plug x=-2 into either of the equations to find y. y=x+4 will be simpler to work with so:

 

y=x+4

y=-2+4

y=2

 

Therefore x=-2, y=2.

 Jul 13, 2020
 #2
avatar+752 
+1

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(−2,2)

Equation Form:

x=−2,y=2

Hope this helps, whymenotsmart^m^.

 Jul 13, 2020

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