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Vesnalui [34]
4 years ago
14

A line includes the points (-3, 8) and (-1, 2). What is its equation in slope- intercept form

Mathematics
1 answer:
DedPeter [7]4 years ago
6 0
Slope intercept form is y=mx+b where m is slow and b is y intercept. since we dont have this info we will have to do some work to solve.

1. find slope. this is change in y du used by change in. so we take the two points given and subtract the y values and divide by difference of x values
m=(8-2)/(-3--1)=6/-2=-3

2
use point slope formula and simplify. this is y-y1=m(x-x1) where (x1,y1) is a point on the l in ne. you can pick either point it doesn't matter. we will use (-1,2)
y-2=-3(x+1)

simplify to slope intercept by solving for y

y-2=-3x-3
y=-3x-1
so we have slope -3 and y intercept -1
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Answer:

The equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4) is x=-5

Option A is correct.

Step-by-step explanation:

We need to find equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4)

We need a line parallel to x=-2 or x+2=0 it should be of form x+k=0

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