Ch 1 to 3 Review - Rational, Polynomial, Lines
Chapter 3
Ch 1 to 3 Review - Rational, Polynomial, Lines
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Solutions 22 Videos

Which expression has the greatest value?

A. -5-2+4

B. 3-12+2

C. 5-(-3)-10-7-(-2)+1

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Which expression has a positive value?

A. (-9.3)^2

B. -9.3^2

C. (-9.3)^3

D. -9.3^3

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Which of these is not equal to -5 \frac{1}{5}?

A. \displaystyle - \frac{26}{5}

B. \displaystyle -5 + \frac{1}{5}

C. -5.2

d. -5 - \frac{1}{5}

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Which two numbers have a product of 7^8 and a quotient of 7^4?

A. 7^6 and 7^1

B. 7^3 and 7^2

C. 7^9 and 7^4

D. 7^6 and 7^2

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Which expression is not equal to 2^9

A. \displaystyle 8^3

B. \displaystyle \frac{(36^3)^3}{(18^3)^3}

C. \displaystyle (2^3)(2^3)

D. \displaystyle (2^4)(2^3)(2)(2)

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Which expression do the tiles represent?

A. \displaystyle (x^2+ 2x + 4)-(3x^2 -3x + 1)

B. \displaystyle (x^2+ 2x + 4)-3x^2 -3x + 1

C. \displaystyle (-3x^2+ 3x + 1)+(x^2 + 2x + 4)

D. \displaystyle (-3x^2- 3x - 1)+(x^2 + 2x + 4)

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Simplify \displaystyle 12 - 9(x -5)-(3x + 4)

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The area and length of a rectangle are shown. Determine the missing side.

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Read these statements about the graph.

i) Line 1 is a direct variation.

ii) Pay is the independent variable.

iii) Line 2 represents a lower-paying job than line 1.

Which choice best represents the statements?

A. Only i) is true.

B. Only ii) is true.

C. Both 1) and ii) are true.

D. Both i) and iii) are true.

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Which statement is false?

A. A line with a negative slope rises to the right.

B. A line with a positive slope rises to the right.

C. The y-intercept of a line is the point where the x—coordinate is 0.

D. If the rate of change of a relation is positive, then its graph goes up from left to right.

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Identify the correct sum of \displaystyle 3\frac{3}{8} + ( - 2 \frac{1}{6}) .

A. \displaystyle 1 \frac{5}{24}

B. \displaystyle 5 \frac{13}{24}

C. \displaystyle 1 \frac{1}{14}

D. \displaystyle - 1 \frac{5}{24}

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Find the solutions:

\displaystyle - \frac{3}{5} - 2 \frac{1}{4}

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Which of the following is farthest to the right of zero on a number line.

A. \displaystyle (\frac{5}{8})^2

B. \displaystyle (\frac{-7}{8})^2

C. \displaystyle (-1\frac{2}{8})^2

D. \displaystyle (1\frac{1}{4})^2

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Which of the following has a value of 1?

A. \displaystyle 1 \frac{1}{2} \times \frac{1}{2}

B. \displaystyle - \frac{3}{4} \times 1 \frac{1}{3}

C. \displaystyle \frac{3}{5} \div 1 \frac{2}{3}

D. \displaystyle - 2 \frac{1}{4} \div (-2 \frac{1}{4})

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Which of the following are like terms?

A. 2x and 3x^2

B. -5y and 4x

C. -6a^2 and -6a^3

D. 7c and -9c

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What is the value of 4(2x-3) + 6x^2 when x = - 1?

A. -26

B. 26

C. 14

D. -14

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Which one of these ordered pairs is not on the graph of y = -3x -2?

A. (4, -14)

B. (-2, 3)

C. (-1, 1)

D. (0, -2)

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What is the slope of the line that passes through A(-4, 7) and B(3, -2)?

A. \displaystyle \frac{9}{-7/}

B. \displaystyle \frac{-7}{9}

C. \displaystyle \frac{9}{7}

D. \displaystyle \frac{7}{9}

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What are the x- and y-intercepts of -2x - 5y = 20?

A. x = 10 and y = -4

B. x = -10 and y = -4

C. x = -10 and y = 4

D. x= 10 and y = 4

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Sara rents a car for a day. She is charged for 535 plus $0.20/ km. Which one of the following statements is false?

A. The The initial cost value is $35.

B. The rate of change is $0.20/km.

C. The relation between cost and distance driven is a direct variation.

D. It will cost Sara $55 to rent the car for one day and drive 100 km.

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Which of the following statements are true?

A. The first differences of a linear relation are constant.

B. The equation of a linear relation has a degree of 1.

C. The first differences of a nonlinear relation are not constant.

D. All of the above.

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A rectangle has a perimeter of 120 cm. Which of the following dimensions are not possible for this rectangle?

A. length 55 cm and width 5 cm

B. length 45 cm and width 15 cm

C. length 26 cm and width 24 cm

D. length 37 cm and width 23 cm

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