Question

http://prntscr.com/9gp6s8. I can't remember how I got the y-intercept using this table. ~old math is forgotten lol~ help?

Answer 1

there is no image

Answer 2

Oh!! Hold on!! @ayeshaafzal221

Answer 3

http://prntscr.com/9gpa9a

Answer 4

There

Answer 5

I know how I got the slope, though.

Answer 6

ok how did u get slop by \[\frac{ y _{2}-y _{1} }{ x _{2}-x1 }\]

Answer 7

Maybe you substituted x=2 into your multiple choice.

Answer 8

Yes, I believe so.

Answer 9

once u get a slope just use g\[y-y _{1}=m(x-x _{1})\]

Answer 10

I'm sorry?

Answer 11

thats a formula for getting eq

Answer 12

Or... You said you know how to get the slope right?

Answer 13

Yes. I do. I just still don't understand how I would get "2" as being the y-intercept

Answer 14

or there is a shorter way

Answer 15

like @Lovelarap said

Answer 16

just sub x value and solve ans see if u get correct y value

Answer 17

like if i sub 2 in first eq it will y=1/2 *+2 which will give me y=3

Answer 18

Then you might have substituted x=2 and y=3 in to y=1/2x+? (let's make ? b). So you have y=1/2x+b
Substitute x=2 and y=3 in to it you get 3=1+b, solve for b you get 2!

Answer 19

and if i sub 4 in first eq it will y=1/2 *4+2 which will give me y=4

Answer 20

Ah, okay I see now. Thanks, guys!

Answer 21

np anytime :)

Answer 22

Your welcome.

Answer 23

Thanks @Astrophysics and @ayeshaafzal221 !

Answer 24

You should try to understand what exactly the y - intercept is, and that will make it much more clear.
The y - intercept is where the line crosses the y - axis notice how your table on the x - axis it's going up by 2 and y is going up by 1 (you can look at slope also)

Answer 25

if we add a bit more columns we can see the following from the pattern