This is proportional, (Proportional means it has an equivalent ratio/constant rate of change/the same rate) y = 12x

Hence, the equation is proportional.

Step-by-step explanation:

To test for proportionality ;

y = 12x

For a proportional relationship ;

y α x

y = kx ; where, k is the constant of proportionality.

From. The equation given

y = 12x ; 12 is thw proportionality constant.

y = 3x+4

step-by-step explanation:

to find the slope

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

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4