W5 Assessment



W5 Assessment

Determine whether the relation is a function.{(-2, -7), (3, -5), (6, -4), (9, -6), (10, -1)}B) Function

Reason: It is a FUNCTION because none of the five ordered pairs have the same first coordinates.

Determine whether the relation is a function.{(-5, -4), (-2, 9), (-1, -2), (-1, 7)}B) Not a function

Reason: It is not a FUNCTION because the last two ordered pairs have the same first coordinate, namely -1.

Determine whether the relation is a function.{(-7, -1), (-7, 2), (-1, 8), (3, 3), (10, -7)}B) Function

Reason: It is not a FUNCTION because the first two ordered pairs has the same first coordinate, namely -7.

Determine whether the relation is a function.{(1, -3), (1, 1), (6, -8), (9, -3), (11, -3)}

A) Not a functionReason: It is not a FUNCTION because the first two ordered pairs has the same first coordinate, namely 1.

Determine whether the relation is a function.{(-6, -9), (-2, 1), (1, -1), (7, -7)}B) Function

Reason: It is a FUNCTION because none of the four ordered pairs have the same first coordinates.

Determine whether the equation defines y as a function of x.x + y = 9

A) y is a function of xReason: y is a function of x, because for every x value there is no more than a y value. (In fact for every x there is exactly one y value) i.e. y = 9 - x.

Determine whether the equation defines y as a function of x.x2 + y2 = 1

A) y is a function of xReason: y is a function of x, because for every x value there is no more than a y value. (In fact for every x there is exactly one y value) i.e. x2 = 1 - y2 and y =

Determine whether the equation defines y as a function of x.x = y2

A) y is a function of x

Reason: ...