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Solve, using linear combination.
3x + y = 4
2x + y = 4
(1, 7)
(0, 4)
(3, 12)
(3, 13)
 one year ago
 one year ago
Solve, using linear combination. 3x + y = 4 2x + y = 4 (1, 7) (0, 4) (3, 12) (3, 13)
 one year ago
 one year ago

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JayDSBest ResponseYou've already chosen the best response.1
Well there are two options to use substitution method or elimination method, I'm sure you are aware of this.
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
I'll be using the substitution one in this case. 1) 3x + y = 4 I am going to rearrange to y =ax + b form y = 3x + 4 sub y = 3x + 4 into second equation 2x + y = 4 2x + (3x + 4) = 4 2x 3x + 4 = 4 x = 0 x = 0 sub x = 0 back into either equations to find y 2x + y = 4 2(0) + y = 4 0 + y = 4 y = 4 so (0,4) and the second answer.
 one year ago

dana.lindseyBest ResponseYou've already chosen the best response.0
oooooo i get it now thank you :)
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
no problem :) and remember you can always check with these type of questions if you have got it correct or not by subbing back the x and y values you obtained into the equations.
 one year ago
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