Consider the function represented by 9x + 3y = 12 with x as the independent variable. how can this function be written using function notation

Question: Consider the function represented by 9x + 3y = 12 with x as the independent variable. How can this function be written using function notation.  This function can be written using the following function notation: f(x)=__ x + 4 ; f(x)= -3x+4

9x + 3y = 12
3y = - 9x + 12
y = -9/3 x + 12/3
y = -3 x + 4

y = f(x)

Thus, f(x) = - 3x + 4

 

J 56

Step-by-step explanation:

The area of the figure is  the large square x^2 minus the small square y^2

The area is x^2 -y^2 = 52

Since x and y are integers the of the squares must be 52

x^2 = y^2 +52

We know that it must be fairly large

Let y = 12

x^2 = 12^2 +52

x^2 = 144+52

x^2 = 196

x=14

The perimeter is the sum of the 4 sides

P = x+x + (x-y) +y+y + (x-y)

 Combining like terms

P = 4x

P = 4(14)

P = 56