Which of the following relationships represents a function?

The answer would be D.

To be a function for each unique x value you need one y value.

In A there are two -1 x values but each one has a different y value. To be a function they would need to have the same y value... this is the same for b and c as well.

D

Step-by-step explanation:

You can not have multiple outputs for an input in a function.

In A, input x = -1 has multiple y values

In B, x = -5 has multiple y values

In C, x = 5 has multiple y values

Only D has a unique y value for every x

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)