A few days ago
Shano P

How do I write an equation if there is a fraction involved?

For example how would I do/ what is the answer to:

A line with slope 3/2 that passes through the point (-2,0)

Thanks very much!!

Top 3 Answers
A few days ago
gitter1226

Favorite Answer

The exact same way you would if it was an integer.

y = slope * x + y-intercept

y = (3/2)x + 3

another way to write it is

y = (3x / 2) + 3

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A few days ago
molawby
I saw this one coming, that is

why I answered how to do it

with your last question

use the pt slope formula

you have been given one point

that means the other point is

(x,y). consider the point given

(-2,0) to be your start point, and (x,y)

your end point. from the last lesson

y(end)-y(start)=M(x(end)-x(start))

M is slope.

do the substitutions and simplify

to reach the eqn you need.

I believe your next question should

be about finding the end point, so I will tell

you how to do that

M=rise/run

rise=change in height (change in y values)

run=change in distance(change in x values)

M=(y(end)-y(start))/(x(end)-x(start))

for the information you gave in

this problem

M=3/2 and that means

this ratio means y changes by 3

and x changes by 2

as the line goes through space

y(end)-y(start)=y(end)-0=3

thus y(end)=3……(x,3)

x(end)-x(start)=x(end)-(-2)=2

thus, x(end)=0……(0,y)

the point is then

(0,3) the zero in the x position

also tells us that 3 is the y-intercept.

y-intercept is where the line passes through

the y-axis and that only happens when

x=0.

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A few days ago
Anonymous
you put it in y=mx+b form
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