Find the Equation Using Point-Slope Formula (8,-3) , m=-1/4

$(8, - 3)$ , $m = - \frac{1}{4}$

Use the slope $- \frac{1}{4}$ and a given point $(8, - 3)$ to substitute for $x_{1}$ and $y_{1}$ in the point-slope form $y - y_{1} = m (x - x_{1})$ , which is derived from the slope equation $m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}$ .

$y - (- 3) = - \frac{1}{4} \cdot (x - (8))$

Simplify the equation and keep it in point-slope form.

$y + 3 = - \frac{1}{4} \cdot (x - 8)$

Solve for $y$ .

Simplify $- \frac{1}{4} \cdot (x - 8)$ .

Rewrite.

$y + 3 = 0 + 0 - \frac{1}{4} \cdot (x - 8)$

Simplify by adding zeros.

$y + 3 = - \frac{1}{4} \cdot (x - 8)$

Apply the distributive property.

$y + 3 = - \frac{1}{4} x - \frac{1}{4} \cdot - 8$

Combine $x$ and $\frac{1}{4}$ .

$y + 3 = - \frac{x}{4} - \frac{1}{4} \cdot - 8$

Cancel the common factor of $4$ .

Move the leading negative in $- \frac{1}{4}$ into the numerator.

$y + 3 = - \frac{x}{4} + \frac{- 1}{4} \cdot - 8$

Factor $4$ out of $- 8$ .

$y + 3 = - \frac{x}{4} + \frac{- 1}{4} \cdot (4 (- 2))$

Cancel the common factor.

$y + 3 = - \frac{x}{4} + \frac{- 1}{4} \cdot (4 \cdot - 2)$

Rewrite the expression.

$y + 3 = - \frac{x}{4} - 1 \cdot - 2$

Multiply $- 1$ by $- 2$ .

$y + 3 = - \frac{x}{4} + 2$

Move all terms not containing $y$ to the right side of the equation.

Subtract $3$ from both sides of the equation.

$y = - \frac{x}{4} + 2 - 3$

Subtract $3$ from $2$ .

$y = - \frac{x}{4} - 1$

Write in $y = m x + b$ form.

Reorder terms.

$y = - (\frac{1}{4} x) - 1$

Remove parentheses.

$y = - \frac{1}{4} x - 1$

List the equation in different forms.

Slope-intercept form:

$y = - \frac{1}{4} x - 1$

Point-slope form:

$y + 3 = - \frac{1}{4} \cdot (x - 8)$

Find the Equation Using Point-Slope Formula (8,-3) , m=-1/4

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