Points (-21, 1/2) and (-7, y) have a slope of -1/7. find the y coordinate of the point. SOMEONE PLEASE HELP ME PLEASE HELP ME ON THIS QUESTION.​

Step-by-step explanation:

The slope of a line is defined as m=(y2-y1)/(x2-x1) we are told the slope m is -1/7 and we are given points (-21, 1/2) and (-7, y) so we can say

(.5-y)/(-21- -7)=-1/7

(.5-y)/(-14)=-1/7

.5-y=2

-y=4

y=-4

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.