Exam 1: Functions, Graphs, and Models; Linear Functions

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Determine a viewing window that will provide a complete graph of the function. - y=3x326x2+18x47y = 3 x ^ { 3 } - 26 x ^ { 2 } + 18 x - 47

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Decide whether or not the equation defines y as a function of x. - xy2=8x - y ^ { 2 } = - 8

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Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form. - (3,3);m=3( 3,3 ) ; m = - 3

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Find the average rate of change for the function over the given interval. - y=x2+8xy = x ^ { 2 } + 8 x between x=7x = 7 and x=9x = 9

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Write the equation of the line with the given conditions. -passing through (3,7)( 3 , - 7 ) and perpendicular to the line with equation 4x5y=234 x - 5 y = - 23

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Evaluate the function. -  Given f(x)=2x23x3, find f(4)\text { Given } f ( x ) = 2 x ^ { 2 } - 3 x - 3 , \text { find } f ( - 4 )

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This chart shows the number of meals served in a restaurant during each of the past 4 months. Assume that the information in the chart defines a function with the name g. State the domain of g. Month Number January 3500 February 3557 March 3541 April 3562

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The rate of return of certain investments increases as the risk factor of the investment increases. An investment with a risk factor of 2 has a rate of return of 5.0%. An investment with a risk factor of 24 has a rate of return of 12)0%. What is the average rate of return per unit of risk?

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Decide whether or not the arrow diagram defines a function. -Decide whether or not the arrow diagram defines a function. -

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Find the average rate of change for the function over the given interval. - y=x2 between x=5 and x=10y = x ^ { 2 } \text { between } x = - 5 \text { and } x = 10

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A gas station sells 4820 gallons of regular unleaded gasoline on a day when they charge $1.35 per gallon, whereas they sell 3861 gallons on a day that they charge $1.40 per gallon. Find a linear function that expresses Gallons sold as a function of price.

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Graph the equation. - y=3x+2y = 3 x + 2  Graph the equation. - y = 3 x + 2

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Find the slope of the line through the pair of points. - (5,6)( - 5 , - 6 ) and (3,1)( - 3,1 )

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(-4,6) ; m=-4

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Decide whether or not the equation defines y as a function of x. - y=2x2+2x1y = 2 x ^ { 2 } + 2 x - 1

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Graph the equation. -Graph the equation. -

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Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 770. Find a linear function S(t), which fits this data, And which expresses score as a function of time.

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Use the table to answer the question. - x -3 0 1 6 13 18 31 y=g(x) 3 9 11 21 35 45 71 Is g(6) an input or output of this function?

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Find the slope of the line through the pair of points. - (7,6) and (7,1)( 7 , - 6 ) \text { and } ( 7 , - 1 )

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Decide if the function is linear. - y=2x23y = 2 x ^ { 2 } - 3

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