Which of the following expressions represents a function?

y = x2

{ (9, 2), (4, - 2), (5, 3), (9, - 4) }

x = - 3

x2 = 25 - y2

Question

Mathematics

Kyson Stone

21 January, 00:24

Which of the following expressions represents a function?

y = x2

{ (9, 2), (4, - 2), (5, 3), (9, - 4) }

x = - 3

x2 = 25 - y2

+1

Answers (1)

Know the Answer?

Ben Nunez · Answer 1

A function is a relation where there is only one y-value for each x-value. According to this definition, the only given expression that represents a function is y = x^2

Which of the following expressions represents a function?y = x2{ (9, 2), (4, - 2), (5, 3), (9, - 4) }x = - 3x2 = 25 - y2

Which of the following expressions represents a function?

y = x2

{ (9, 2), (4, - 2), (5, 3), (9, - 4) }

x = - 3

x2 = 25 - y2