sadieeee49
sadieeee49 sadieeee49
  • 04-05-2019
  • Mathematics
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Pleeeeaaaseee help!!

Pleeeeaaaseee help class=

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altavistard
altavistard altavistard
  • 04-05-2019

Answer:

Step-by-step explanation:

The equation is 3x - 5y =20.  

Suppose we start with (5, y).  What value of y is a solution of this equation?

Substitute 5 for x in 3x - 5y =20, obtaining:  3(5) - 5y = 20.  

Then -5y = 5, and y = -1.  Thus, (5, -1) is a solution of 3x - 5y =20.

Next:

We have (x, 2).  Find the value of x that makes (x, 2) a solution of 3x - 5y =20.

Replace y with 2:  3x - 5(2) =20

Then 3x = 30, and x = 10.  So (10, 2) is a solution of 3x - 5y =20.

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