Math 021 Test 2 Review Sheet - 2012 Page 2
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12Test 2 Review Sheet
MATH 021
09/12
7.
When solving an inequality, when is it necessary to reverse the direction of the
inequality?
8.
Solve each inequality algebraically. Then graph the solution on a number line.
a.
c.
b.
d.
III.
Formulas
9.
Solve each formula for variable indicated.
a.
c.
b.
d.
IV.
Functions
10.
State the definition of a function.
11.
Fill in the Blank: The Vertical Line Test states that if a __________ line crosses a graph
in more than one place, the graph is not a function. This is because for some value of
__________, there would be more than one value for __________.
12.
State whether each of the following represent a function? Explain why.
a.
b.
x
y
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