Help I don’t know the answer to this and yea

In the surface area formula for cylinders which expressionrepresents the lateral area

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

Which of the following is the correct ratio for converting kilograms to grams