Question

The statement among the following that describes the differences between the graph of f and the graph of the output of f multiplied by 3 is

1. The slope changes by a factor of 3; the y-intercept does not change
2. Both the slope and y-intercept change by a factor of 3
3. The slope does not change; the intercept changes by a factor of 3
4. Neither the slope not y-intercept change