Select the equation corresponding to the green line in this diagram:
a. y=6x
b. y= -6x
c. y= -6

C. y = -6

Step-by-step explanation:

y = -6 [or f(x)=-6] is graphed as a horizontal line that goes through the y-axis one time at (0,-6). It looks odd, but essentially this function is saying that for any and all inputs, the output will be -6.

For future reference, if ever you have a function where x = (some number) then the graph will be a vertical line that crosses the x-axis once at some point.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: