MAT_1143-apr_25 - Click to edit Master subtitle style...

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Click to edit Master subtitle style April 25, 2011 Sections 7.1-7.3
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As before, we first look at new functions by contrasting to ones we’ve already seen.
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Is the table to the right A: A linear function B: An exponential function C: Not a function at all D: A function, but not one we’ve identified yet x y 0 2 1 5 2 8 3 11
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For the table to the right, the equation is A: y = 3 + 2x B: y = 2 + 3x C: y = 2*3^x D: It is not a function x y 0 2 1 5 2 8 3 11
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Is the table to the right A: A linear function B: An exponential function C: Not a function at all D: A function, but not one we’ve identified yet x y 0 2 1 6 2 18 3 54
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For the table to the right, the equation is A: y = 2 + 3x B: y = 3*2^x C: y = 2*3^x D: It is not a function x y 0 2 1 6 2 18 3 54
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Is the table to the right A: A linear function B: An exponential function C: Not a function at all D: A function, but not one we’ve identified yet x y 0 2 1 2 2 2 3 2
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Is the table to the right A: A linear function B: An exponential function C: Not a function at all D: A function, but not one we’ve identified yet x y 1 2 1 4 2 6 3 8
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Is the table to the right A: A linear function B: An exponential function C: Not a function at all D: A function, but not one we’ve identified yet x y 0 0 10 1 20 2 30 3
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x y 0 0 10 1 20 2 30 3 For the table to the right, the equation is A: y = 10^x B: y = 0.1*x C: y = 10*x D: It is not a function This is our example of Tithe = 10% of Income We said Tithe was directly proportional to income
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Directly Proportional So far, we’ve seen it in lines only Y = mx (the b = 0) Lots of other events where an increase in input should produce a corresponding increase in output Amount of time studying versus grade
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