Identify which of the following equations represent functions. Select all that apply.
A. y = 4x + 13
B. x = 5
C. x2 + y2 = 16
D. y2 = x - 6
E. y = 3x2 - x - 1

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

the answer is

d.

5.3066 m2

step-by-step explanation: