Algebra Examples

$y = 5 x + 2$ , $2 y = 2 x + 15$ , $(1, 7)$

Simplify $5 (1) + 2$ .

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Multiply $5$ by $1$ .

$7 = 5 + 2$

$2 (7) = 2 (1) + 15$

Add $5$ and $2$ .

$7 = 7$

$2 (7) = 2 (1) + 15$

$7 = 7$

$2 (7) = 2 (1) + 15$

Since $7 = 7$ , the equation will always be true.

Always true

$2 (7) = 2 (1) + 15$

Multiply $2$ by $7$ .

Always true

$14 = 2 (1) + 15$

Simplify $2 (1) + 15$ .

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Multiply $2$ by $1$ .

Always true

$14 = 2 + 15$

Add $2$ and $15$ .

Always true

$14 = 17$

Always true

$14 = 17$

Since $14 \neq 17$ , there are no solutions.

No solution

The ordered pair is not a solution to the system of equations.

$(1, 7)$ is not a solution

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