Question

Which is an equation in slope-intercept form for the line passing through (–1, 5) and (5, 8).

Answer 1

@wolf1728

Answer 2

Can you help?

Answer 3

Yes. So first we need to find the slope. To do that, we do
5-8/-1-5.
Can you simplify that?

Answer 4

so -3/-6

Answer 5

thats -1/2

Answer 6

Good, but remember that both negative signs cancel out. So it will be only 1/2. NExt we put in point slope form using the first point,
y-5=1/2(x-8)
Now distribute the right side. What do you get?

Answer 7

Wait how do I do that?

Answer 8

I mean how do I distribute the right side?

Answer 9

To distribute the right side, do1/2 times x, and 1/2 times -8.

Answer 10

so 1/2x and -4?

Answer 11

Yes. :) So now we have y-5=1/2x-4. Now add 5 to both sides. The 5 on the left side will cancel out, so what do you have now?

Answer 12

y=1/2x+1?

Answer 13

That's your equation. :D

Answer 14

A. y=-1/2x+11/2
B. y=1/2x-11/2
C. y=1/2x+11/2
D. y=-1/2x-11/2
I have to choose from these....

Answer 15

Maybe its C.?

Answer 16

LOL I see what I did wrong. Sorry. The equation should have been
y-5=1/2(x+1) Lets use the point (-1,5)
y-5=1/2x+0.5 (distribute)
y=1/2x+5.5 (add 5 to both sides)'
or y=1/2x+11/2
Sorry for the previous mistake

Answer 17

Its ok thank you so much do you think I can tag you in another question for more help? :)
You explain things so well and walk me through all the steps!!

Answer 18

Sure. :D

Answer 19

Ok let me close this one and tag you so look out for it! :)