Brad and George have a huge rectangular porch on the front of their house with dimensions of 25 ft. And 40 ft. Their friends Gwen and Lisa have a similar porch, but its dimensions are 20 ft. By 45 ft.

step-by-step explanation:

a

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

3x + 4y -25 =0 represents the amount of change sianna should recieve