How do you find the slope and y intercept for y = –x + 7?

$\textcolor{w h i t e}{\text{XXXX}}$$y = m x + b$
is in slope intercept form with slope $m$ and y-intercept $b$
$y = - x + 7 = \left(- 1\right) x + 7$ is an example of an equation in this form.
It has a slope of $\left(- 1\right)$ and a y-intercept of$7$