find the slope intercept if x intercept is 3 and y is 4/5

Question

anonymous · Answer

Are they only giving you that one point?

If so, and you are assuming the line goes through the origin (0,0), then you cane find the slope by rise/run

So...

Slope = rise/run
Slope = y/x

anonymous · Answer

ok it's not y = mx + b

anonymous · Answer

That is the overall equation, so m is your slope in that equation. and b is your y intercept. So if you know what b is then you could plug that in, otherwise if b goes to 0...

y=mx+b
assume b=0
y=mx
m=y/x

anonymous · Answer

i thought b = 4/5

anonymous · Answer

Oh! So sorry, one second I misread the problem!

anonymous · Answer

You are correct!

So b=4/5,

y=mx+4/5
if you now use the other number, so when x=3, y=0
y=mx+4/5
0=3m+4/5
Now from there you can solve for m :)

Sorry about the confusion