Integrated Algebra - June 2009

17 At Genesee High School, the sophomore class has 60 more students than the freshman class. The junior class has 50 fewer students than twice the students in the freshman class. The senior class is
three times as large as the freshman class. If there are a total of 1,424 students at Genesee High School, how many students are in the freshman class?

(1) 202     (3) 235
(2) 205     (4) 236

18 What are the vertex and axis of symmetry of the parabola y = x2 - 16x + 63?

(1) vertex: (8,-1); axis of symmetry: x = 8
(2) vertex: (8,1); axis of symmetry: x = 8
(3) vertex: (-8,-1); axis of symmetry: x = -8
(4) vertex: (-8,1); axis of symmetry: x = -8

19 Which statement is true about the relation shown on the graph below?

1) It is a function because there exists one x-coordinate for each y-coordinate.
(2) It is a function because there exists one y-coordinate for each x-coordinate.
(3) It is not a function because there are multiple y-values for a given x-value.
(4) It is not a function because there are multiple x-values for a given y-value.

20 Which graph represents the solution of 3y . 9 6x?

Click om image to inlarge

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