If y = 4x – 1, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

{(2, 5), (4, 12), (9, 25)}

{(–3, –10), (0, –2), (6, –18)}

{(7, 24), (–1, –9), (–8, 35)}

{(1, 3), (–2, –9), (0, –1)}

Question

If y = 4x – 1, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

 {(2, 5), (4, 12), (9, 25)}

 {(–3, –10), (0, –2), (6, –18)}

 {(7, 24), (–1, –9), (–8, 35)}

 {(1, 3), (–2, –9), (0, –1)}

anonymous · Answer

put in the first number,see if you get the second 
for example for $(2,5)$ check if $$5=4\times 2-1$$
it does not, since the right side is 7

anonymous · Answer

I'm confused. this is all new to me @satellite73