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2 years ago

15

Find three solutions to each equation then graph the solution set -2x+y=1

1 answer:

yulyashka [42]2 years ago

4 0

<u>First Solution</u>
      -2x + y = 1
-2x + 2x + y = 1 + 2x
   y = 1 + 2x

<u>Second Solution</u>
   -2x + y = 1
-2x + y - y = 1 - y
   <u>-2x</u> = <u>1 - y</u>
      -2    -2
      x = -0.5 + 0.5y
0.5 + x - x = -0.5 + 0.5 - x + 0.5y
   0.5 = -x + 0.5y
-0.5y - 0.5 = -x + 0.5y - 0.5y - 0.5
   2 · (-0.5y) = 2(-x - 0.5)
      y = -2x - 1

<u>Third Solution</u>
   -2x + y = 1
      -2x + y - 1 = 1 - 1
      -2x + y - 1 = 0
-2x + 2x + y - 1 = 2x
   y - 1 = 2x
   y - 1 + 1 = 2x + 1
      y = 2x + 1

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Step-by-step explanation:

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we know that

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<u><em>Verify each solution</em></u>

Substitute each value of x in the expression above and interpret the results

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