Integrated Algebra - January 2011

PART 1

1 Given:

X = {1, 2, 3, 4}
Y = {2, 3, 4, 5}
Z = {3, 4, 5, 6}


What is the intersection of sets X, Y, and Z ?

(1) {3, 4}     (3) {3, 4, 5}
(2) {2, 3,      (4} (4) {1, 2, 3, 4, 5, 6}

2 Which graph could be used to find the solution of the system of
equations y = 2x + 6 and y = x2 + 4x + 3?

3 What is the relationship between the independent and dependent
variables in the scatter plot shown below?

(1) undefined correlation     (3) positive correlation
(2) negative correlation       (4) no correlation

4 Tim ate four more cookies than Alice. Bob ate twice as many cookies as
Tim. If x represents the number of cookies Alice ate, which expression
represents the number of cookies Bob ate?

(1) 2 + (x + 4)     (3) 2(x + 4)
(2) 2x + 4           (4) 4(x + 2)

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