Algebra Examples

$y = 7 x - 3 (x - 1)$

Simplify $7 x - 3 (x - 1)$ .

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Simplify each term.

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Apply the distributive property.

$y = 7 x - 3 x - 3 \cdot - 1$

Multiply $- 3$ by $- 1$ .

$y = 7 x - 3 x + 3$

Subtract $3 x$ from $7 x$ .

$y = 4 x + 3$

A linear equation is an equation of a straight line, which means that the degree of a linear equation must be $0$ or $1$ for each of its variables. In this case, the degree of variable $y$ is $1$ and the degree of variable $x$ is $1$ .

Linear

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