# Thread: graphing: find the y-intercept, need help!

1. ## graphing: find the y-intercept, need help!

So i have two point on my graph

(2,5) and (-3,-3)

the slope is

m=8/5

so y=8/5x + b

i take the first point

so 5= 8/5 (2) + b
5= 16/5 +b

afterwards... im stuck can somebody help me figure out the answers plx

2. Originally Posted by jingming90
So i have two point on my graph

(2,5) and (-3,-3)

the slope is

m=8/5

so y=8/5x + b

i take the first point

so 5= 8/5 (2) + b
5= 16/5 +b

$b = 5 - \frac{16}{5}$

common denominator?

3. would I still get the same answer if i use (-3,-3)

4. You should be getting the same answer, yes.