Pre-Algebra Examples

$m = 7$ , $(0, 7)$

Step 1

Find the value of $b$ using the formula for the equation of a line.

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Step 1.1

Use the formula for the equation of a line to find $b$ .

$y = m x + b$

Step 1.2

Substitute the value of $m$ into the equation.

$y = (7) \cdot x + b$

Step 1.3

Substitute the value of $x$ into the equation.

$y = (7) \cdot (0) + b$

Step 1.4

Substitute the value of $y$ into the equation.

$7 = (7) \cdot (0) + b$

Step 1.5

Find the value of $b$ .

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Step 1.5.1

Rewrite the equation as $(7) \cdot (0) + b = 7$ .

$(7) \cdot (0) + b = 7$

Step 1.5.2

Simplify $(7) \cdot (0) + b$ .

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Step 1.5.2.1

Multiply $7$ by $0$ .

$0 + b = 7$

Step 1.5.2.2

Add $0$ and $b$ .

$b = 7$

Step 2

Now that the values of $m$ (slope) and $b$ (y-intercept) are known, substitute them into $y = m x + b$ to find the equation of the line.

$y = 7 x + 7$

Step 3