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

{(1, 4), (2, 8), (3, 12)}
{(4, 1), (8, 2), (12, 3)}
{(0, 1), (1, 5), (2, 9)}
{(1, 0), (5, 1), (9, 2)}

Question

If y − 1 = 4x, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

 {(1, 4), (2, 8), (3, 12)}
 {(4, 1), (8, 2), (12, 3)}
 {(0, 1), (1, 5), (2, 9)}
 {(1, 0), (5, 1), (9, 2)}

volleyballlover55 · Answer

@Michele_Laino

michele_laino · Answer

hint:
please compute these quantities:
$$\begin{gathered}
  y = 4 \cdot 0 + 1 = ...? \hfill \
  y = 4 \cdot 1 + 1 = ...? \hfill \
  y = 4 \cdot 2 + 1 = ...? \hfill \ 
\end{gathered} $$

volleyballlover55 · Answer

1
5
9

michele_laino · Answer

so we can write this table:
|dw:1465409167664:dw|