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Mathematics 7 Online
OpenStudy (anonymous):

Write an equation of the line that passes through (8, 3) and (4, 3). y = 3 y = 4x + 3 y = 4 y = 3x

OpenStudy (anonymous):

this time im almost certain that it is 0/4

jimthompson5910 (jim_thompson5910):

So the slope is 0

jimthompson5910 (jim_thompson5910):

This means you'll have a horizontal line

jimthompson5910 (jim_thompson5910):

All horizontal lines look like this: y = k where k is some number

OpenStudy (anonymous):

k=m right

jimthompson5910 (jim_thompson5910):

no, m is the slope

jimthompson5910 (jim_thompson5910):

but k is not 0

OpenStudy (anonymous):

hu?

jimthompson5910 (jim_thompson5910):

look at the y coordinates of both points

OpenStudy (anonymous):

ok just give me it step by easy step please

jimthompson5910 (jim_thompson5910):

what are they

OpenStudy (anonymous):

3?

jimthompson5910 (jim_thompson5910):

so because BOTH points have y = 3, the equation is simply y = 3

jimthompson5910 (jim_thompson5910):

since ALL points on this line have a y coordinate of 3

OpenStudy (anonymous):

um so the answer is y=3?

jimthompson5910 (jim_thompson5910):

(5, 3), (10, 3), (21, 3), etc etc

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (anonymous):

thanks a lot!

jimthompson5910 (jim_thompson5910):

np

OpenStudy (anonymous):

yeah it is constant at y axis......... but it since it represents a horizontal line it will pass through all the points in horizontal axis(x-axis) jim_thompson5910 is right

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