#2 Page 706f (x) = 4 This is a constant function which is linear. Y is a function of x so therefore we can use f(x) to represent y. So y = 4 which will be a horizontal line. Since any real number can be used for x inf(x) = 4 and the line extends without bounds to the left and right. Since there is not variables in the expression, the domains are all real numbers (-∞,∞). The first point is x = 0 and y = 4 so therefore the point is (0,4) and range is 4. The graph would show a horizontal line on the top portion of the graph. Using the vertical line test this is a function being the vertical line does not cross the line more than once.