Which equation is NOT a function?

y = 3x - 20

x + 2y = 8

y = x^2 - 4

x + y^2 = 16

Question

Mathematics

Evelyn Horne

5 June, 22:35

Which equation is NOT a function?

y = 3x - 20

x + 2y = 8

y = x^2 - 4

x + y^2 = 16

+3

Answers (1)

Know the Answer?

Desiree Hubbard · Answer 1

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.

Which equation is NOT a function?y = 3x - 20x + 2y = 8y = x^2 - 4x + y^2 = 16

Which equation is NOT a function?

y = 3x - 20

x + 2y = 8

y = x^2 - 4

x + y^2 = 16