The length of a rectangle is equal to triple the width. Which system fold equations can be used to find the dimensions of the rectangle if the perimeter is 86 centimeters?

Length: 3(10.75) = 32.25 cm

Width: 10.75 cm

Step-by-step explanation:

Length: 3x

Width: x

2(3x)+2x=86cm

6x+2x=86cm

8x = 86cm

x = 86/8

x = 10.75

78.59 is the mean

step-by-step explanation:

  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.