Please help me on these problems. I really need help on these problems.

Review & Preview 6-123. Rewrite y = 2x + 5 as a stretch and shift of y = - . State the asymptotes for the x - 2 function. 6-124. Prove that the following trigonometric equations are true. cot x a. (sec x - cos x) = 1 b. (cos x + 1)(cos x - 1) + sin2 x =0 sin x 6-125. Let f(x) = x2/3. (To graph correctly on your calculator, be sure to include the correct parenthesis.) a. Sketch the graph of f(x) . b. Let g(x) = 2f(x) -3. Sketch the graph of g(x) . 306 Pre-Calculus with Trigonometry