Which equation does the graph below represent?

A coordinate grid is shown. The x axis values are from negative 5 to positive 5 in increments of 1 for each grid line, and the y axis values are from negative 10 to positive 10 in increments of 2 for each grid line. A line is shown passing through the ordered pairs negative 4, 8 and 0, 0 and 4, negative 8.

Question

Which equation does the graph below represent?

A coordinate grid is shown. The x axis values are from negative 5 to positive 5 in increments of 1 for each grid line, and the y axis values are from negative 10 to positive 10 in increments of 2 for each grid line. A line is shown passing through the ordered pairs negative 4, 8 and 0, 0 and 4, negative 8.

snowflake0531 · Answer

so, you know that the points are
(4,8), (0,0), and (4,-8)
but then that wouldn't be a linear equation...

could you please screenshot the question?

jaelaj3 · Answer

attachment

snowflake0531 · Answer

so can i just ignore the other stuff that you said, and just look at the graph and find the equation?

jaelaj3 · Answer

y = −2x

y = fraction negative 1 over 2x

y = 2x

y = fraction 1 over 2x
those are the answeres

jaelaj3 · Answer

yes

snowflake0531 · Answer

okay,
do you know how to find the slope of an equation?
or the y-intercept?

jaelaj3 · Answer

rise over run

snowflake0531 · Answer

yes
so, choose 2 random coordinate points for me
and write them

jaelaj3 · Answer

1.-2

snowflake0531 · Answer

okay, and anotehr one?

snowflake0531 · Answer

and it would be easier if they were closer together by the way

jaelaj3 · Answer

2. -4

snowflake0531 · Answer

okay, and by teh way, coordinates are written as
(1,-2) and (2,-4)
okay, so do you know the actual formula to find the slope, not just rise over run?

jaelaj3 · Answer

y=   +x

jaelaj3 · Answer

or times x

jaelaj3 · Answer

this is the formula
(y2-y1)/(x2-x1)

snowflake0531 · Answer

yes, do you know hwo to use it?

jaelaj3 · Answer

take the points and use the eqaution
(y2-y1) (4-0)= 4
(x2-x1) (8-0)= 8
so the slope is equal to 4/8
4/8 simplifies to 1/2
so the slope is 1/2x

jaelaj3 · Answer

i just need to know if its positive or negative

jaelaj3 · Answer

and why

snowflake0531 · Answer

ummm, that's not really how you do it

jaelaj3 · Answer

ok, where am I wrong?

jaelaj3 · Answer

idk

snowflake0531 · Answer

okay, so,
y2-y1/x2-x1

in (1,-2) and (2,-4)
2 and 1 can be our x and y 1's, and -4 and -2 can be our x and y 2nd's
so, give me a sec, i'll draw it out

snowflake0531 · Answer

|dw:1615000510864:dw|
if that makes sense

jaelaj3 · Answer

the answer?

jaelaj3 · Answer

little confused

jaelaj3 · Answer

so its y =1 over 2x

snowflake0531 · Answer

so -4 - (-2) = -2
2-1 =1
-2/1
=-2

snowflake0531 · Answer

*-2x

1 attachment