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Use elimination to solve the system of equations. 2x+3y=6 and -4x-6y=-12

1 Answer

6 votes

Answer:

infinite number of solutions

Explanation:

2x + 3y = 6 → (1)

- 4x - 6y = - 12 → (2)

multiplying (1) by 2 and adding to (2) eliminates the variables

4x + 6y = 12 → (3)

add (2) and (3) term by term

(- 4x + 4x) + (- 6y + 6y) = - 12 + 12 , that is

0 + 0 = 0, or

0 = 0 ← true statement

this true statement indicates there are an infinite number of solutions

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