Question

How do I find the slope and y-intercept of Y=-9x?

Answer 1

what is the coefficient of x here? do you know?

Answer 2

it does not say..

Answer 3

just look at your equation

Answer 4

what is the number beside x??

Answer 5

the only thing it says is y=-9x

Answer 6

i know..but you can see a number beside x right?

Answer 7

nope, do they want me to assume it is 1?

Answer 8

OH! they -9, i feel silly! yes i see it now

Answer 9

that is the slope

Answer 10

now... what is the constant in your equation (the number WITHOUT any letters)

Answer 11

im not sure, the -9?

Answer 12

-9 has a letter beside it...x

Answer 13

and i just said -9 is the slope

Answer 14

the value of x

Answer 15

huh?

Answer 16

is the constant the value of whatever x is?

Answer 17

no. just look at y = -9x and tell me the number you see that doesn't have any letters beside it

Answer 18

there is none, -9 has an x, and it is the only number in the equation

Answer 19

right!

Answer 20

so that means the constant is 0. make sense?

Answer 21

yes i believe so

Answer 22

so slope = -9; y-intercept = 0

Answer 23

got it?

Answer 24

Okay, yes. it makes sense now. THANKYOU!

Answer 25

welcome

Answer 26

the "slope-intercept" form:
y = mx + b
This is called the slope-intercept form because "m" is the slope and "b" gives the y-intercept. (For a review of how this equation is used for graphing, look at slope and graphing.)
From the site:
http://www.purplemath.com/modules/strtlneq.htm

Answer 27

^thanks aswell

Answer 28

glad to help