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anonymous
 3 years ago
Sorry for being a pain :D
Use the substitution method to solve the following system of equations.
4x − y = 3
7x − 9y = −2
(1, 1)
(6, −3)
(6, 1)
(1, −3)
anonymous
 3 years ago
Sorry for being a pain :D Use the substitution method to solve the following system of equations. 4x − y = 3 7x − 9y = −2 (1, 1) (6, −3) (6, 1) (1, −3)

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Hero
 3 years ago
Best ResponseYou've already chosen the best response.1Add y to both sides, then subtract 3 from both sides to isolate y in the first equation. Doing so gives: y = 4x  3 The expression for y can be substituted into the second equation: 7x  9y = 2 and after substitution we have 7x  9(4x  3) = 2 Now we simplify and solve for x: 7x  36x + 27 = 2 (7  36)x + 27 = 2 (36  7)x + 27 + 2 = 0 (29)x + 29 = 0 29 = 29x 29/29 = x 1 = x Now plug the value for x back into the one of the original equations to get y.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0I don't know how to get the Y... that's why im asking for help..

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Do I do it the same way you got x?

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1We isolated y earlier to get y = 4x  3 If we substitute x = 1 into that equation, we get y.

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1y = 4(1)  3 y = 4  3 y = 1 Therefore, the point is (1,1)

Hero
 3 years ago
Best ResponseYou've already chosen the best response.1Reread it all over again, but slowly.
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