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miv72 [106K]
3 years ago
8

What is the equation of the line that passes through the point (−1,−5) and has a slope of −3?

Mathematics
1 answer:
Hitman42 [59]3 years ago
6 0

Answer:

y=-3x-8

Step-by-step explanation:

Linear equations are typically organized in slope-intercept form:

y=mx+b where m is the slope and b is the y-intercept (the value of y when the line crosses the y-axis)

<u>1) Plug the slope (m) into the equation</u>

We're given that the slope is -3. Plug -3 into the equation

y=-3x+b

<u>2) Solve for the y-intercept (b)</u>

To solve for b, plug the given point (-1,-5) into the equation as (x,y).

-5=-3(-1)+b\\-5=3+b

Subtract 3 from both sides

-5-3=3+b-3\\-8=b

Therefore, the y-intercept is -8. Plug -8 back into our original equation as b

y=-3x-8

I hope this helps!

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