Section 2: Short answer questions Two questions in this section. Enter your answers on OnQ and submit written solutions to Question 4 and 5 to Crowdmark. Question 4 (0.5 points) A table of values of a linear function z=f(x,y) is given below: x\\y y=0.5y=1 y=1.5 x=1.5-4.5 -4.25-4 x=2 -5.75 -5.5 -5.25 x=2.5-7 -6.75-6.5 (a) Determine the linear function z=f(x,y). (b) Evaluate the function at (3,1), i.e., find f(3,1). Enter your answer in the blank below. Your