A direct variation function contains the points (-8, -6) and (12,9). Which equation represents the function? O y=-4/3x
Oy= -3/4x
Oy= 3/4x
Oy=4/3x

y =

Step-by-step explanation:

Each point is (x,y). So to find the equation, substitute both points into the given choices.

To test the first choice: y = substitute -8 into x and -6 into y

-6 =

-6(3) = (-4)(-8)

-18 ≠ 32

Since the numbers are not equal this is not the correct equation. Move on to testing the next equation in the same manner.

The third equation y = satisfies both points

Test for point (-8,-6)

-6 =

-6(4) = (3)(-8)

-24 = -24

Test for point (12,9)

9 =

9(4) = (3)(12)

36 = 36

(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads