Question

What is the y-intercept of the line passing through the point (9, -7) with a slope of -1/8 ?

A 47/8
B -47/8
c 65/8
D -65/8

Answer 1

Equation of line is y =mx + C

Substitute value of (x,y) as (9,-7) and slope as m = (-1/8) to find out C

for Y intercept, put x=0, and put values of m = (-1/8) and C

Answer 2

y = mx +c
(x,y) = (9,-7) and m = -(1/8)

-7 = -9/8 + C
C = 9/8 + 7
c = 65/8

Answer 3

So now you have

m = -(1/8)
C = 65/8
and x = 0... to find Y intercept using the same equation y = mx + c