Question #570e2

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Answer 1 · 2017-12-05T22:27:29

$y = - 4 x + 4$ $y=-4x+4$

Use point slope equation: $\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$ $(y_2-y_1)/(x_2-x_1)$
$\frac{- 8 - 4}{3 - 0} = - \frac{12}{3} = - 4$ $(-8-4)/(3-0)=-12/3=-4$
$f (0) = 4$ $f(0)=4$ They give you the y-intercept in this problem.
Apply to slope equation: $y = m x + b$ $y=mx+b$
Linear function: $y = - 4 x + 4$ $y=-4x+4$
Note: To check your work, graph the linear equation and see if the points match at $(0, 4)$ $(0,4)$ and $(3, - 8)$ $(3,-8)$ .
graph{-4x+4 [-10, 10, -5, 5]}