Question

What is the slope-intercept form of the function that contains the points (6, 2) and (4, 8)?
Y=__x+___

Answer 1

First you need to find the slope. :) Use the slope formula \[m = \frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]

Answer 2

the slope is -3 right?

Answer 3

Correct! :) Where does the slope go in the equation?

Answer 4

the M=slope

Answer 5

I need help finding B

Answer 6

Right, so it will be next to the x. :) y = mx +b
Now we need to find the "b," which is the y-intercept. The y-intercept is where the line crosses the y-axis so that means the x value of that coordinate will be 0.
Take a look at the graph, what's the y-intercept? :)

Answer 7

20?

Answer 8

Yup, you got it! So what's the final equation?

Answer 9

Y=-3x+20

Answer 10

perfect

Answer 11

THANKS

Answer 12

No prob :3