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At which point do the graphs of the equations below intersect?
(PLEASE ANSWER)

At which point do the graphs of the equations below intersect? (PLEASE ANSWER)-example-1
User Don Lun
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1 Answer

5 votes

Answer:

(2,4)

Step-by-step explanation: There are several ways to do this, but one of them is this:

You multiply 9x + y = 4 by 2 to get 18x + 2y = 8

Then subtract the entire equation from the second equation (the first step was done so the y's could be canceled out)

-6x + 2y = -4

- 18x + 2y = 8

You can cancel out the 2y's and then subtract. You are left with -24x = -12. You can then divide each side each side by -12. You would have x = 2. The last step is to plug 2 as x into one of the equations

ex.

-6(2) + 2y = -4

-12 + 2y = -4

2y = 8

y = 4

(x,y) = (2,4)

User Wasteland
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