Question

Write the equation of the line on the following graph. (pic included) Please let me know if my answer is correct?

Answer 1

What did you get??

Answer 2

My answer was y = 3/3x + 1
please let me know if im correct

Answer 3

nope, not correct.

Answer 4

2/3?

Answer 5

Explain it to me please.

Answer 6

ok lets take any two points on the graph

Answer 7

2/3 looks like the correct slope. You got everything correct except for the slope. instead of 3/3x it would be (2/3)x

Answer 8

i will choose (0,-1)(1.5,0)

Answer 9

I'll let @surdawi explain.

Answer 10

m = (y2 - y1)/(x2 - x1)

can you plug in the numbers and find the slope

Answer 11

choose any two points

Answer 12

How about points -1 and 3?

Answer 13

you need two points on the line

Answer 14

(0,-1) and (3,1)

Answer 15

ok
now what are the y values and what are the x values

Answer 16

y values are 1 and -1, x are 0 and 3

Answer 17

can you substitute into this equation

m = (y2-y1)/(x2-x1)

Answer 18

m = (1 - -1) / (3-0)

Answer 19

what will it be

Answer 20

2/3

Answer 21

y – y1 = m*(x – x1)
plug in

Answer 22

y-(-1)=mx-m0

Answer 23

would that be it?

Answer 24

yes, what is m

Answer 25

m is 1?

Answer 26

u solved for it earlier

Answer 27

I just don't understand how to subtract mx from m0

Answer 28

anything times zero is zero

Answer 29

y - -1 = mx

Answer 30

m is 2/3 right?

Answer 31

Oh okay, so i put 2/3 into the formula

Answer 32

yes
y - -1
what is - - 1=

Answer 33

it is 1

Answer 34

So y + 1 = 2/3x?

Answer 35

yes
but the slope equation is

y = mx + b

move the 1 to the other side what do you get

Answer 36

y = 2/3x + 1

Thank you! :)

Answer 37

nope to move the one you need to subtract

y +1 = 2/3x
-1 -1

y = 2/3x - 1

Answer 38

Oh okay, so I subtract the 1. Thank you for your help :)

Answer 39

anytime