Question

Which is an equation in slope-intercept form for the line passing through (5, 1) and (–4, 7).

Answer 1

Do you know the formula to find slope?

Answer 2

-.- wow dragonflame

Answer 3

M=y2-y1/x2-x1

Answer 4

Correct, to clean it up a bit.

\(\Large{m=\frac{y_2-y_1}{x_2-x_1}}\)

And then you have two points.

\((5, 1)\rightarrow(x_1,y_1)\)
\((-4,7)\rightarrow(x_2,y_2)\)

can you find slope for me?

Answer 5

y=6
x=-9

Answer 6

\(\large{m=-\frac{6}{9}}\)

Okay so now we have that.

The basic form of a line is slope intercept is this,

\(y=mx+b\)

You put in the slope that you calculated.

\(\large{y=-\frac{6}{9}x+b}\)

Now, you need to take one of the points from above, and put them in for x and y to solve for b. Do you think you could do that?

Answer 7

Yea one sec lemme do that

Answer 8

\[y=-6/9*5+1\]

Answer 9

\(\large{1=-\frac{6}{9}(5)+b}\)

Solve for b.

Answer 10

Ah my bad sorry

Answer 11

No worries, it takes some time to get used to it :P

Answer 12

30/9+1=b

Answer 13

Can you simplify that? 30/9+1?

Answer 14

13/3

Answer 15

Correct, not plug that in for be in the basic formula with the m in as well.

Answer 16

now*

Answer 17

What was the basic formula again?

Answer 18

\(y=mx+b\)

Answer 19

13/3=-2/3x+b

Answer 20

No, plug it in for B

Answer 21

y=-2/3x+13/3

Answer 22

Math way helps

Answer 23

Correct Dragon, good job!

Answer 24

Sure, but austin is helping me learn how to do it for future reference

Answer 25

Thx

Answer 26

No problem, you have a good day/night/evening/whatevertimeitiswhereveryoulive
I am gonna go study my calc 3, take care :)

Answer 27

I will have a good 5:09 PM You 2!