Answer:
When a vertical line is placed across the plot of this relation, it intersects the graph more than once for some values of x. If a graph shows two or more intersections with a vertical line, then an input (x-coordinate) can have more than one output (y-coordinate), and y is not a function of x.
Step-by-step explanation:
So area of cake
area=pi times radius^2
diameter=2radius
diameter/2=radius
find radius
diameter=6
6/2=raidus=3
formula is
A=3.14 times 3^2
A=3.14 times 9
A=28.26 cm^2
A, “the graph passes the vertical line test.”
Maybe I can help you it depends the problem.