Question

Model the function rule y = -2x - 3 with a table of values.
I can show you my answer if you would like to tell me what I did wrong..

Answer 1

Sure post what you have so far

Answer 2

0 -1.5
2 - 2.5
4 -3.5
6 -4.5
8 -5.5

Answer 3

when x = 0, y is ....

y = -2x - 3

y = -2*0 - 3 ... replace x with 0 (since x = 0)

y = 0 - 3

y = -3

So when x = 0, y = -3

so the first row should be: 0 -3

Answer 4

similarly, when x = 2, y is...

y = -2x - 3

y = -2*2 - 3

y = -4 - 3

y = -7

so the next row is: 2 -7

hopefully this is making sense

Answer 5

Can you help me witht the next question? I suck at these..

Answer 6

just keep practicing and you'll get better

Answer 7

what's your next question

Answer 8

For the function rule y = -2x - 3, provide the x-y coordinates of the y-intercept and the x-intercept

Answer 9

so do i just put down what I got for this question?

Answer 10

the y-intercept happens when x = 0

so we already know what the y-intercept is (look above)

Answer 11

what is the y-intercept?

Answer 12

- 3?

Answer 13

as an ordered pair though

Answer 14

(0,-3)

Answer 15

good

Answer 16

how would you find the x-intercept?

Answer 17

Constant rate of change?

Answer 18

no, you plug in y = 0 and solve for x

Answer 19

x- y Coordinates
(0,-3),(2,-7),(4,-11),(6,-15),(8,-19)

Answer 20

yes those are points that lie on the line

Answer 21

what about the x-intercept?

Answer 22

I don't know.. :(

Answer 23

plug in y = 0 and solve for x

Answer 24

y = -2x - 3

0 = -2x - 3

x = ??

Answer 25

-2x?

Answer 26

0 = -2x - 3

3 = -2x

-2x = 3

x = ???

Answer 27

x = 0?

Answer 28

no

Answer 29

try it again

Answer 30

i don't know. I give up.

Answer 31

-2 * _______ = 3

what goes in the blank?

Answer 32

it's not 0

Answer 33

-1?

Answer 34

I really don't know. I'm doing homeschooling and i'm having trouble.

Answer 35

what operation is the opposite of multiplication?

Answer 36

Dividing

Answer 37

so you divide both sides by _____ (fill in the blank) to isolate x


-2x = 3

x = ???