Flashback 9-6-12 1. A car averages 27 miles per gallon. If gas costs $4.04 per gallon, which of the following is closest to how much the gas would cost.

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Presentation transcript:

Flashback 9-6-12 1. A car averages 27 miles per gallon. If gas costs $4.04 per gallon, which of the following is closest to how much the gas would cost for this car to travel 2,727 typical miles? A. $ 44.44 B. $109.08 C. $118.80 D. $408.04 E. $444.40 2. When x = 3 and y = 5, by how much does the value of 3x^2 – 2yexceed the value of 2x^2 – 3y ? F. 4 G. 14 H. 16 J. 20 K. 50

Joke of the day You have 10 fish, 5 drown, 3 come back to life. How many fish do you have?

Stop counting smart one. Fish can’t drown.

Relation Set of ordered pairs

parameter Variable, usually t, used to define 2 other variables (x and y). T usually represents time, angle measure, or distance travelled

Parametric equations Equations that define variables in terms of the parameter. i.e. y = t x = √t

Parameter interval Domain of the parameter

Initial point Point where the graph of a parametric curve begins

Terminal point Point where the graph of a parametric curve ends

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Exit Slip Which of the following are equivalent to 16^2x? 2^8x 2^16x 4^8x 8^4x 32^x Solve 3^-x = 7 graphically. (i.e. Use your calculator.)