# Unit 3 Test Review: Question Preview (ID: 23803)

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 Identify the slope and y-intercept in the following equation. y=-3x + 7 a) slope= -3 y-intercept= 7/1 b) slope= 7 y-intercept= -3 c) slope= -3 y-intercept= 7 d) slope= -3/1 y-intercept= -7 Netflix charges \$5.50 for a movie plus \$1 per night. Blockbuster's charges \$7 for a movie plus \$0.50 per night. Write an equation to represent each situation. a) Netflix: y= 1x + 5.50 Blockbuster: y= .50x + 7 b) Netflix: y= 1x - 5.50 Blockbuster: y= .50x - 7 c) Netflix: y= 5.50x + 1 Blockbuster: y= 7x + .50 d) Netflix: y= 5.50x - 1 Blockbuster: y= 7x - .50 Solve using substitution when given two equations: y= 1x + 5.50 and y= .50x + 7 a) (4, 9) b) (3, 8.50) c) (8.50, 3) d) (9,4) Given the points (1,5) and (4,11), use the slope equation to find the slope. a) slope= 6/1 b) slope= 2/3 c) slope= 6/3 d) slope= 3 Whens using a graph to solve a system of equations, what point on the graph shows the solution? a) The point where both lines intersect. b) The point where one line is higher than the second line. c) The starting point. d) The point where the line ends. N/A a) N/A b) c) d) N/A a) N/A b) c) d) N/A a) N/A b) c) d) N/A a) N/A b) c) d) N/A a) N/A b) c) d)
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