Test Bank all Chapter, Answer at the end of

College Algebra Graphs and Models 6e Marvin Bittinger, Judith Beecher, David Ellenbogen, Judith Penna

(Test Bank all Chapter, Answer at the end of each Chapter)

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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Solve and graph the solution set. 1) 1) 20 x + 35 > 5 ( 3 x + 6 ) A) {x|x < - 1 } or ( - Q , - 1 ) B) {x|x > - 1 } or ( - 1 , Q ) C) {x|x > 20 } or ( 20 , Q ) D) {x|x < 20 } or ( - Q , 20 ) Write equations of the horizontal and the vertical lines that pass through the given point. 2) 2) ( - 2 , - 4 ) A) horizontal: y = - 4 x + 0; vertical: x = - 2 y + 0 B) horizontal: y = - 1 2 x + 0; vertical: - 1 2 y = x + 0 C) horizontal: y = - 4 ; vertical: x = - 2 D) horizontal: x = - 2 ; vertical; y = - 4 1 Chapter 1 2 / 4

Use the given graph to find the x - intercept and the zero of the function. 3) 3) A) (0, 0); 0 B) ( - 4 , 0); - 4 C) ( - 6 , 0); - 6 D) ( - 4 , - 6 ); - 4 Is the following correspondence a function? 4) 4) 9 10 - 19 - 12 A) Yes B) No Determine whether the graph is the graph of a function. 5) 5) A) Yes B) No Determine whether the pair of lines is parallel, perpendicular, or neither. 6) 6) 12 x + 4 y = 16 21 x + 7 y = 31 A) Parallel B) Perpendicular C) Neither Write a slope - intercept equation for a line with the given characteristics. 7) m = - 6 7 , passes through ( 3 , 5 ) 7) A) y = 6 7 x - 53 7 B) y = - 6 7 x + 53 7 C) y = - 6 7 x - 53 7 D) y = - 7 6 x - 53 6 2 3 / 4

Solve the problem. 8) 8) The function H described by H(x) = 2.75x + 71.48 can be used to estimate the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long. Estimate the height of a woman whose humerus is 30.32 cm long. A) 104.55 cm B) 43.91 cm C) 154.86 cm D) 11.9 cm 9) 9) A real estate agent's commission rate is 15 %. He receives a commission of $32,205 on the sale of a home. How much did the home sell for? A) $ 182,495 B) $ 214,700 C) $ 246,905 D) $ 37,036 Write a slope - intercept equation for a line with the given characteristics. 10) m = - 9 7 , passes through ( 1 , 8 ) 10) A) y = - 9 7 x + 65 7 B) y = - 7 9 x - 65 9 C) y = - 9 7 x - 65 7 D) y = 9 7 x - 65 7 Use substitution to determine whether the given ordered pair is a solution of the given equation. 11) 11) ( 2 , 2 ); 3 x + 2 y = 10 A) Yes B) No Plot the two points given by the ordered pairs. 12) 12) A( - 2 , 0), B(0, 2 ) A) B) 3

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