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mixas84 [53]
3 years ago
14

Find the value of x and y for which (x,10) and (-7,y) are points on the graph of y = 1/7x + 10

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
7 0
1/7x+10=10 1/7x=0 x=0
(1/7)*(-7)+10=y y=9
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26 candy bars and 12 sodas

Step-by-step explanation:

This problem can be solved by a simple system of equations

I am going to call x the number of candy bars that Sally bought and y the number of sodas that Sally bought.

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So we have to solve the following system:

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From 1), we have that x = 38 - y. I am going to replace it in 2)

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