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ludmilkaskok [199]
3 years ago
15

Pleeease help me. I need help with this one.

Mathematics
2 answers:
Genrish500 [490]3 years ago
5 0

Answer:

<u>Ravi</u> and <u>Courtney</u>

Step-by-step explanation:

<u>Simplifying the equations</u>

<u>Penny</u>

  • 2x - y = -1
  • y = 2x + 1

<u>Ravi</u>

  • 2x + 3y = 3
  • 3y = -2x + 3
  • y = -2/3x + 3

<u>Courtney</u>

  • -4x - 6y = -6
  • 6y = -4x + 6
  • y = -2/3x + 3

<u>Edwin</u>

  • 6x + 6y = 9
  • 6y = -6x + 9
  • y = -x + 9

<u>Ravi</u> and <u>Courtney</u> would have infinitely many solutions because they are the same equation.

aliina [53]3 years ago
3 0

Answer:

Ravi and Courtney have the same equation so they will have infinetely many solutions.

Step-by-step explanation:

<u>Step 1:  Solve each equation for y</u>

Penny → 2x - y = 1

           → -y + 2x - 2x = 1 - 2x

           → (-y) * -1 = (1 - 2x) * -1

           → y = 2x - 1

Ravi → 2x + 3y = 3

       → 3y + 2x - 2x = 3 - 2x

       → (3y)/3 = (3 - 2x)/3

       → y = -2/3x + 1

Courtney → -4x - 6y = -6

                → -6y - 4x + 4x = -6 + 4x

                → (-6y)/-6 = (-6 + 4x)/-6

                → y = -2/3x + 1

Edwin → 6x + 6y = 9

           → 6y + 6x - 6x = 9 - 6x

           → (6y)/6 = (9 - 6x)/6

           → y = -x + 1.5

Answer: Ravi and Courtney have the same equation so they will have infinetely many solutions.

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