If y = 5x − 4, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

{(0, −4), (2, 6), (4, 20)}
{(0, −4), (2, 6), (4, 16)}
{(0, 4), (2, 6), (4, 16)}
{(0, 4), (2, −6), (4, 20)}

Question

If y = 5x − 4, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

 {(0, −4), (2, 6), (4, 20)}
 {(0, −4), (2, 6), (4, 16)}
 {(0, 4), (2, 6), (4, 16)}
 {(0, 4), (2, −6), (4, 20)}

rcp031 · Answer

Function 'y' will have only one output for any independent values of 'x'
when you plug x=0,2,4 in y = 5x − 4 we get y=-4, 6, 16 respectively.
Hence  {(0, −4), (2, 6), (4, 16)} our solution