Solve x 2y = 13 4x 8y = 9 [Solved]

52 8y 8y = -9

4x 8y = 52
4x 8y = 9

The system of equations doesnt work.

The system of equations doesnt work.

1) substitution: x 2y=13 so x=13-2y
the substitute the x in the other equation for the answer you just got so 4(13-2y) 8y=-9 and solve for y.
4(13-2y) 8y=-9
46-8y 8y=-9
46=-9 oh no! it looks like those equations dont have a common point/solution. they must be parallel lines.
and they are because (4x 8y=-9) divided by 4 is the equation x 2y=-9/4 which is the same slope as the other equation it just starts on a different line. NO SOLUTION.

There is no solution. This system is inconsistent.
You can see this by dividing the second equation by 4, which gives: x 2y = -9/4 . This is inconsistent with the first equation.

x 2y = 13
4x 8y = -9

52 = -9

x = 13 2y

4(13 2y) 8y = -9

52 8y 8y = -9

x 2y = 13
4x 8y = -9

This post is last updated on hrtanswers.com at Date : 1st of September – 2022

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