If f(x) is an even function, which statement about the graph of f(x) must be true?
-it has rotational symmetry about the origin.
-it has line symmetry about the line y = x.
-it has line symmetry about the y-axis.
-it has line symmetry about the x-axis.

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.