Pre-Algebra Examples

$y = \frac{1 - 3 \cdot - 1}{2}$

Step 1

Rewrite in slope-intercept form.

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Step 1.1

The slope-intercept form is $y = m x + b$ , where $m$ is the slope and $b$ is the y-intercept.

$y = m x + b$

Step 1.2

Simplify the right side.

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Step 1.2.1

Simplify $\frac{1 - 3 \cdot - 1}{2}$ .

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Step 1.2.1.1

Simplify the numerator.

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Step 1.2.1.1.1

Multiply $- 3$ by $- 1$ .

$y = \frac{1 + 3}{2}$

Step 1.2.1.1.2

Add $1$ and $3$ .

$y = \frac{4}{2}$

Step 1.2.1.2

Divide $4$ by $2$ .

$y = 2$

Step 2

Using the slope-intercept form, the y-intercept is $2$ .

$b = 2$

Step 3

y-intercept in point form.

$(0, 2)$

Step 4