What happens to the value of the expression 1+3f increases?

When you answer this can you explain

Which of the following is an equation of a line parallel to the equation y=4x+1?

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.