What is the perimeter and area of the rectangle

P = 2x -4

A =4x-24

Step-by-step explanation:

l = x-6 and w = 4

The perimeter is given by

P = 2(l+w)

P = 2(x-6+4)

Combine like terms

  =2(x-2)

Distribute

   = 2x -4

The area is given by

A = l*w

   =(x-6)*4

Distribute

4x-24

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:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value