Question

Using the given information, write an equation in slope-intercept form. then graph.
(-1/2,3/4)(-3,2)

Answer 1

First, you want to find the slope. Do you know how to do that?

Answer 2

y = mx + b
m= slope and b is y intercept

m = y2-y1/x2-x1

Answer 3

You will want to find the slope before we can do anything else :)

Answer 4

okay.. don't you stack and subtract???

Answer 5

so, you use the formula @zpupster gave you. m=y2-y1/x2-x1. (x1,y1), (x2,y2) and you plug in the points.

Answer 6

So it will look like (2-3/4)/(-3-(-1/2)) and you need to solve. Remember, subtracting a negative is the same as adding a positive. :)

Answer 7

okay hang on :P

Answer 8

okay :)

Answer 9

Did you get it?

Answer 10

It should turn out as a decimal.....

Answer 11

how do u subtract the whole number and fractions?? I suck with fractions

Answer 12

so turn them into decimals. so 2-0.75/-3+0.5

Answer 13

1.25/-2.5=-0.5 :) now plug that into the equation as m :) Do that and then tell me what you get for the equation so far.

Answer 14

wait okay, so subtracting I got 1.25/3.5

Answer 15

-2.5, not 3.5 :) remember, the 3 was negative

Answer 16

oh okay. xD srry, im just now getting out of school o3o

Answer 17

Here, I will just show you the steps.....
y=-0.5x+b
now we will plug in one of the points to find b.
(2)=-0.5(-3)+b
2=1.5+b
-1.5
0.5=b
now plug b back into the equation
y=-0.5x+0.5

So I hope you can tell what I did :) Good luck!