A number of squares are connected in a row to form a rectangle. The table shows the relationship between the number of squares, x, and the perimeter, y, of the rectangles they form. Select all the true statements about this relation.
Number of Squares, x 1 2 3 4
Perimeter, y 8 12 16 20

The table can be represented by the equation y = 4x + 4.

The graph of the function is nonlinear.

The relation is a function.

The rate of change is NOT constant.
The graph of the function is linear.