Question

Solve the following linear system of equations using substitution.

y = 3x – 5
y = 2x – 6

(3, 2)

(–5, –6)

(–1, –8)

(1, –2)

Answer 1

C. -1,8

Explanation:

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Answer 2

y = 3x – 5 (substitution)

y = 2x – 6

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3x – 5 = 2x – 6

3x – 2x = – 6 + 5

x = – 1

y = 3x – 5 = 3 · (–1) - 5 = – 3 – 5 = – 8

y = – 8

The solution:

(–1, –8)