Determine if the function f(x)=3-1/4x is linear. then evaluate f(-4)

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  is linear; f(-4) = 4

Step-by-step explanation:

The coefficient of x in the function shown here is -1/4, and x is to the first power. It is a linear function.

  f(-4) = 3 -(1/4)(-4) = 3 +1

  f(-4) = 4

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk