Question

Help with part 3 only!!
The table below shows the values of y for each value of x.
x y
0 1
1 2
2 3
3 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 a plumber's total charges, inclusive of call out charges, for h hours of work.
f(h) = 70h + 50
Calculate and interpret the meaning of f(2).
Part C: Write an ordered pair to represent the input and output of the function in Part B when the plumber works for d hours.

Answer 1

That's kind of a tricky play on words...

Well an ordered pair is obviously (x,y) (input,output)

What we INPUT ...is the number of hours...which they donate here to be 'd'....so that would mean x = d..

What we get for an OUTPUT is whatever the function equals at that 'd' hours...so just like at 2 hours it is f(2) this would be f(d) so this means our ordered pair would be

\[\large (d , f(d))\]

From my understanding...

Answer 2

oh okay. Thank you, but do I have to find the numbers or just leave it like that? Sorry, i'm new to this. @johnweldon1993

Answer 3

No need to apologize :) and well the thing is...they have yet to provide you with the hours so there is nothing to find with any numbers...you already solved for 2 hours in part B...part C just asks for a general input output coordinate from what I see...so I would leave it like that...

Answer 4

oh okay thank you so much again! @johnweldon1993

Answer 5

Anytime!