contestada

Solve the system of equations using substitution.
4x - y = 7
3y – 12x = -21
(3,5)
(6, 17)
no solution
infinite solutions

Respuesta :

Space

Answer:

Infinite amount of solutions

Step-by-step explanation:

Step 1: Write systems of equations

4x - y = 7

3y - 12x = -21

Step 2: Rewrite

-y = 7 - 4x

y = 4x - 7

Step 3: Solve for x

  1. Substitute in y into second equation: 3(4x - 7) - 12x = -21
  2. Distribute 3: 12x - 21 - 12x = -21
  3. Combine like terms: -21 = -21

Here we see that we would have infinite amount of solutions.

Answer: infinite solutions. Just took the quiz

Step-by-step explanation: