Question

first to give me answer gets faned and gets a medal


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



y = x +
@anyone123

Answer 1

@amistre64 @Nnesha @whydoihavetosignup1 @rational @sleepyhead314 @hhelpplzzzz @andrewhaze @Mesopretty @Rizags

Answer 2

first find the slope
\[slope = \frac{ rise }{ run } = \frac{ y _{2}-y _{1} }{ x _{2}-x _{1} } \]when given points (x1, y1) and (x2, y2)

Answer 3

so you will get
8 - 2
slope = ------ = ?
4 - 6

Answer 4

so is that the answer @sleepyhead314 because I really suck at this

Answer 5

not quite :) I'm trying to help you step by step

8 - 2
slope = ------ = ?
4 - 6

try to simplify that :)

Answer 6

http://openstudy.com/updates/552311c6e4b07d2168db63b1

Answer 7

so 6 and -2

Answer 8

why not just solve it first? that way you'd get the medal

Answer 9

right then 6 divided by (-2) = ?

Answer 10

-3

Answer 11

good so now you have your slope ^_^
slope = -3


then we have to find our y-intercept

Answer 12

y = -3x + b

we can temporarily plug in the point (6, 2) for (x, y)
into the equation to solve for b

2 = (-3)*(6) + b can you solve for b from there? :)

Answer 13

I don't know? are we almost to the answer though @sleepyhead314

Answer 14

yes, all you have to do is solve for b from the equation
2 = (-3)*(6) + b I'll do a few steps for you
2 = -18 + b then add 18 to both sides

Answer 15

so 20 = -18 + 18b?

Answer 16

whoops you're thinking too hard ^_^
b = 2 + 18 = ?

Answer 17

oh so just 20?

Answer 18

yes :)

then we plug in the numbers we got back into the slope intercept form!

y = m x + b

m = -3
b = 20

just plug in those two numbers!

Answer 19

17?

Answer 20

you don't need to add or subtract anything :)

just PLUG the two numbers for the Letters

y = (m) x + (b)

m = -3
b = 20

Answer 21

oh ok thanks :)