Question

Solve the system of equations using the substitution method.

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​ x = −2 2x + 5 = y

Answer 1

`\text{Solve by plugging -2 to x:}\\\\\text{We know this by the question identifies what the value of x is}\\\\2(-2)+5=y\\\\\text{Solve:}\\\\2(-2)+5=y\\\\-4+5=y\\\\\boxed{1=y}`

Answer 2

y = 1

Explanation:

`x=-2\\2x+5=y`

`2(-2)+5=y\\-4+5=y\\1=y`