SOLUTION: How do you solve for x and y, and then graph these equations? 8x + 2y = 7 3x

SOLUTION: How do you solve for x and y, and then graph these equations? 8x + 2y = 7 3x - 4y = 5

Question 342318: How do you solve for x and y, and then graph these equations?
8x + 2y = 7
3x - 4y = 5
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Multiply the first equation by 2 and add them,

Then use either equation to solve for

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Convert both equations to slope intercept form, .

Plot the y-intercept (,).
Then use the slope to calculate another point on the line.
Slope is change in y over change in x.
If changes by , then will change by ,
Another point on the line would be,

(,)
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.

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.

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Plot the y-intercept (,).
Then use the slope to calculate another point on the line.
If changes by , then will change by ,
Another point on the line would be,

(,)
.
.
.

.
.
.
Note the intersection of the lines occurs at (,) as previously determined algebraically.
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