How do you find the slope of $x + y = 7$ ?

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Answer 1 · 2016-01-20T16:22:53

$-1$

$x+y=7$

$implies y=-x+7$
$implies y=(-1)x+7$

If $y=mx+c$ is an equation then $slope=m and c=$ y-intercept

Here $y=(-1)x+7$

$implies slope=-1$ and y-intercept $=7$

Hence slope of the line is $-1$

How do you find the slope of x + y = 7x + y = 7?