Graph the following real-valued functions: 1. f : R  R, such that f(x) = 10  3 4 x. 2. f : R  R, such that f(x) = 5 12x  2. Here, R denotes the non-positive real numbers.

Question 3 Let f : R R be a quadratic function, such that f(x) = 6x 2 + 4x 2. Graph the function by applying the following steps: 1. Factorize the expression 6x 2 + 4x 2. 2. Obtain the intersection with the x axis. (Use step 1 for that purpose.) 3. Obtain the intersection with the y axis. 4. Obtain the axis of symmetry. 5. Evaluate the function in the axis of symmetry. 6. Determine the direction of the hump in the function (i.e., happy face or sad face).