econ101_mathrev

# econ101_mathrev - METU Department of Economics Econ 101...

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1 METU Department of Economics Econ 101: Introduction to Economics I Sections 01-02-03 Fall 2010 Mathematics Review Figure 1 1) According to Figure 1, which line(s) show(s) a positive relationship between x and y ? a) A only b) Both A and D c) A, B. and D d) Both C and E 2) In Figure 1, which line(s) show(s) a negative relationship between x and y ? 3) In Figure 1, which line(s) show(s) a positive intercept? 4) According to Figure 1, which line(s) show(s) a negative intercept?

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2 5) If we say that two variables are directly related, this means that: a) the relationship between the two is purely random. b) an increase in one variable is associated with a decrease in the other variable. c) an increase in one variable is associated with an increase in the other variable. d) the graph has a negative slope. 6) If we say that two variables are inversely related, this means that:
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