Which set of coordinates describes a function? A {(2, -4), (-2, -7), (0, 2), (-3, 8)}
B {(8, 9), (1, 5), (1, 6), (-1, 11)}
C {(6, -4), (-3, -3), (-8, -8), (6, -1)}
D {(8, 3), (-8, -4), (2, 7), (2, 2)}

Choice A describes a function

Step-by-step explanation:

Relations and Functions

A relation is a set of inputs and outputs with no restrictions. A function is a relation with one output for each input.

This means that if at least one input has more than one output, it's not a function.

Analyzing each choice:

A: It can be noted that each input (2,-2,0,-3) has only one output. Thus this set describes a function.

B: Input 1 has two outputs (5,6), thus this is not a function.

C: Input 6 has two outputs (-4,-1), thus this is not a function.

D: Input 2 has two outputs (7,2), thus this is not a function.

right

step-by-step explanation:

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.