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KATRIN_1 [288]
2 years ago
13

The slope of the line that contains the points (1, -1) and (2, 3) is 4. What is the y-intercept?

Mathematics
1 answer:
MrRissso [65]2 years ago
4 0
Y- intercept =-5
y-y1=m(x-x1)
y-(-1)=4(x-1)
y+1=4(x-1)
y+1=4x-4
y=4x-4-1
y=4x-5
Or
y=4x+b
-1=4(1)+b
-1=4+b
-1-4=b
-5=b. Y-intercept is -5
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