8) (a) Determine if the point is in the region described by the inequality. (i) (4,2) and y < x + 1 (ii) (0,-3) and y > x – 6 (iii) (-1,-1) and y < 2x + 1 10Ty 4 -10-9 -8 -7 -6 -5 -4-3-2-10 1 2 3 4 5 6 7 8 9 10 -1 -2 -3 -4 -5 -6 -7

|- 2x + y < - 4 Graph: 2x + 4y 2 - - 8 4. 3. 2. -7 -6 -5 -4 -3 -2 -1 7. -2 -4 Type here to search

6.2 Find minimizers and maximizers of the function 1 f(x₁, x2) = x³ - 4x₁ + x² - 16x2. -

2. Which of the following represents the y-intercept of the graph of the quadratic function y=2x² - 7x+9? (Recall, that the y-intercept of a graph always occurs when x = 0.) (1) 7 (3) -7 (2) 2 (4) 9