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Write an equation in point-slope form for the line that passes through the given points (1,-3),(4,-15)

User Ristogod
by
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2 Answers

3 votes

Answer: b=7

Explanation:

User Tushar Gupta
by
8.3k points
4 votes
ANSWER: y= -4x+1
slope-intercept form is y=mx+b

to find m, which is the slope, we used
m=(y2-y1)/(x2-x1) (rise over run)
=(-15-(-3)/4-1)
= -12/3
= -4

to find b, choose one of the points and use the slope -4 and plug it in:
y=m(x)+b
-3= -4(1)+b
-3= -4+b
1=b
User Michael Walter
by
8.6k points

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