What is the length of the altitude of the equilateral triangle below

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

The equation represents the function f, and the graph represents the function g. f(x)=3(5/2)^x determine the relationship between the growth factors of f and g. a. the growth factor of g is twice the growth factor of f. b. the growth factor of f is twice the growth factor of g. c. the growth factor of f is 2.5 times the growth factor of g. d. the growth factor of f is the same as the growth factor of g.

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!