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

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

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1I'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.

dana.lindsey
 2 years ago
Best ResponseYou've already chosen the best response.0oooooo i get it now thank you :)

JayDS
 2 years ago
Best ResponseYou've already chosen the best response.1no 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.
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