Question

How do I put this into slope intercept form?

(2, 120) (4, 240)
120-240/2-4
=60

Answer 1

well thats the slope m

the point slope form of a line is

y = mx + b

m = slope and b = y-intercept

to calculate b, choice a point say (2, 120)

and substitute into

y = 60x + b to find the value of b

when you have done that you'll have your line in point slope form.

Answer 2

I did that and this is what I get:

y=mx+b
120=60(2)+b
120=120+b
0=b


?? I'm just confused.

Answer 3

thats correct so whats th equation of the line..?

Answer 4

remember its

y = mx + b

you've found m = 60 and b = 0

just substitute for the equation

Answer 5

??? I don't know... so... y = 60x + 0 ????

Answer 6

or is it just y=60x ??? Thank you for your help, by the way, :)

Answer 7

thats it.... to check its correct use the other point (4, 240)

subsitiute x = 4 and you should get y = 240