Which equation is not a function?

y = 3x - 20
x + 2y = 8
y = x^2 - 4
x + y^2 = 16

x + y² = 16

Step-by-step explanation:

x + y² = 16 fails the vertical line test.  If you draw this horizontal parabola and then draw a vertical line through the graph, the line will intersect the parabola in 2 places.  This is a sure-fire way to recognize that x + y² = 16 is not a function.

hey there!

12 is twice as much as 6 because 6 goes into 12 2 times.

since the rabbit is twice as tall, we should multiply the weight of the first rabbit, 0.25, by 2.

0.25 x 2 = 0.5

therefore, the 12 inch chocolate rabbit weighs 0.5 lb, or half a pound.

hope this !