Question

Determine whether the following relation is a function.

{(3,7),(3,8),(3,-2),(3,4),(3,1)}

A. It is a function because the ordered pairs all have the same x-value.
B. It is not a function because there are multiple y-values paired with a single x-value.
C. It is a function because none of the ordered pairs have the same y-value.
D. It is not a function because none of the ordered pairs have the same y-value.


Pls help, I need this ASAP! Ty!

- Lupa

Answer 1

It was C.

Answer 2

Which of the following graphs represents a function? Choose all that apply.
A. A coordinate plane is shown. There are five points on the graph at left parenthesis negative 2 comma 2 right parenthesis, left parenthesis negative 1 comma 1 right parenthesis, left parenthesis negative 1 comma negative 1 right parenthesis, left parenthesis 1 comma 1 right parenthesis, and left parenthesis 2 comma 2 right parenthesis.The y-axis goes from negative 5 to 5. The x-axis also goes from negative 5 to 5. The first point is graphed at left-parenthesis negative 2 comma 2 right-parenthesis, the second point is graphed at left-parenthesis negative 1 comma 1 right-parenthesis, the third point is graphed at left-parenthesis negative 1 comma negative 1 right-parenthesis, the fourth point is graphed at left-parenthesis 1 comma 1 right-parenthesis, and the fifth point is graphed at left-parenthesis 2 comma 2 right-parenthesis.
B. A parabola is graphed on a coordinate plane. Its vertex is at left parenthesis 0 comma 0 right parenthesis and the parabola opens to the right. It also passes through the points left parenthesis 4 comma 2 right parenthesis, left parenthesis 1 comma 1 right parenthesis, left parenthesis 1 comma negative 1 right parenthesis, and left parenthesis 4 comma negative 2 right parenthesis.
C. A parabola is graphed on a coordinate plane. Its vertex is at left parenthesis 0 comma 1 right parenthesis and the parabola opens upward. It also passes through the points left parenthesis negative 2 comma 5 right parenthesis, left parenthesis negative 1 comma 2 right parenthesis, left parenthesis 1 comma 2 right parenthesis, and left parenthesis 2 comma 5 right parenthesis.
D. A coordinate plane is shown. A single line runs from Quadrant Two to Quadrant Four. The line runs through the origin at left parenthesis 0 comma 0 right parenthesis.

Can someone help me out with this one though?


- Lupa

Answer 3

#1 was B, not C

I'll help on #2, but not till you lose all those words, and type real math. For example
"left parenthesis negative 2 comma 2 right parenthesis" means (-2,2)

Answer 4

I know the real math, however I was in a rush and I didn't have the time to type is up the numbers.