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Evaluate the function f(x) = 9x 4 at the given values of the independent variable and simplify. a. f(8) b. f(x+6) c. f()() a. f(8) = (Simplify your answer.) b. f(x + 6) = (Simplify your answer.) c. f( x) = (Simplify your answer.) Use the vertical line test to determine if}; is a function of x in the graph. 0 y is not a function ofx O y is a function ofx Use the graph to determine a. open intervals on which the function is increasing, if any. b. open intervals on which the function is decreasing, if any. c. open intervals on which the function is constant, if any. a. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The function is increasing on the interval(s) (Type your answer in interval notation. Use a comma to separate answers as needed.) O B. There is no interval on which the function is increasing. b. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The function is decreasing on the interval(s) (Type your answer in interval notation. Use a comma to separate answers as needed.) O B. There is no interval on which the function is decreasing. c. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The function is constant on the interval(s) (Type your answer in interval notation. Use a comma to separate answers as needed.) O B. There is no interval on which the function is constant.Lt Without graphing, determine whether the equation has a graph that is symmetric with respect to the x-axis, the yaxis, the origin, or none of these. y = x2 + 2 Choose the correct answer below. xraxis yaxis origin 0000 none of these 5 Find the slope of the line passing through the pair of points or state that the slope is undefined. Then indicate whether the line through the points rises, falls, is horizontal, or is vertical. (-2,4) and (3,3) . . .. . Select the correct choice below and, if necessary, fill in the answer box within your choice. O A. The slope is . (Simplify your answer.) O B. The slope is undefined. Indicate whether the line through the points rises, falls, is horizontal, or is vertical. O A. The line is horizontal. O B. The line rises from left to right. O C. The line is vertical. O D. The line falls from left to right