Question

A line has a slope of -3 and passes through the point (5,-1). what is the equation of the line?

Answer 1

y=-x-8

Explanation:

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Answer 2

`y=-3x+14`

Explanation:

Use slope intercept form.

`y=mx+b`

Where m is the slope and b is the y intercept.

We know the slope is -3 because it is given, so substitute it for m.

`y=-3x+b`

Now we need to solve for b, and we can do this by plugging in the given point into our equation so far.

`-1=-3(5)+b \\ \\ -1 = b-15 \\ \\ b=14`

So our final equation will be
`y=-3x+14`