Question

The table below shows the values of y for each value of x.

x y
-1 0
-1 -1
-2 2
-2 3

Part A: Does the table represent a relation that is a function? Justify your answer by using the values shown in the table.

Part B: The function f(h) shown below represents the number of tennis matches Diana won each month when she practiced tennis for h hours every day.

If f(h) = 3h + 1

Calculate and interpret the meaning of f(3).

Part C: Write an ordered pair to represent the input and output of the function in Part B when Diana practices tennis for b hours every day.

Answer 1

Mind showing us your work?

Answer 2

I was confused asking for help?

Answer 3

Function is a relation where one x value corresponds to only one y value. Since x=-1 corresponds to both y=0 and y=-1, it's not a function.

Answer 4

f(3) will be equal to 3*3+1 which is 10

Answer 5

That means when Diana practices tennis for 3 hours each day, she'll win 10 tennis matches each month.

Answer 6

(x,3x+1) will be the ordered pair because f(x)=3x+1

Answer 7

EDIT: replace x by b because I didn't read the question

Answer 8

Thank You! @kc_kennylau

Answer 9

No problem