7. Which method would be the most efficient to solve the system? y = 1/2x, 2x + 3y = 28 A) graphing B) substitution C) elimination D) distributive

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Amereservant · Answer 1 · 2016-11-14T22:47:31+0000

y = ¹/₂x
2x + 3y = 28

2x + 3y = 28
2x + 3(¹/₂x) = 28
2x + 1¹/₂x = 28
3¹/₂x = 28
3¹/₂ 3¹/₂
x = 8
y = ¹/₂x
y = ¹/₂(8)
y = 4
(x, y) = (8, 4)
The method would be a substitution method (the answer is B).

7. Which method would be the most efficient to solve the system? y = 1/2x, 2x + 3y = 28 A) graphing B) substitution C) elimination D) distributive

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