# A Review Of What We Have Done So Far!: Question Preview (ID: 22688)

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5x - 8 = 7 |
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a) x = 3 | b) x = 2 | c) x = -3 | d) x = 9 | |

-2(4x - 5) + 6x - 4 = -5(x + 7) |
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a) x = 49/9 | b) x = -41/3 | c) x = 16/3 | d) x = -26/3 | |

solve this system. x + y = 3 2x - y = 9 |
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a) x = 4.5, y = -1.5 | b) x = 4, y = -1 | c) x = -1, y = 4 | d) x = 1, y = 3 | |

Which of the following is NOT true about rate of change? |
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a) Rate of change tells us how steep the line will be. | b) A constant rate of change always goes with a linear function. | c) Rate of change measures change in y over change in x. | d) Rate of change does not mean the same thing as slope, because R.o.C. is done on a table and slope is done on a graph. | |

In a triangle, one interior angle measures 15 degrees and another measures 47 degrees. What is the measure of the third angle? |
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a) 28 degrees | b) 180 degrees | c) 118 degrees | d) 128 degrees | |

In a right triangle, the hypotenuse has a value of 30 inches and the base has a value of 7 inches. How tall is the triangle? |
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a) about 29.1 inches tall | b) about 30.80 inches tall | c) about 29.2 inches tall | d) about 30.81 inches tall | |

Two lines cross each other, creating 4 angles. One of the angles measures 28 degrees. What do the other 3 angles measure? |
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a) 28 degrees, 152 degrees, 152 degrees | b) 28 degrees, 62 degrees, 62 degrees | c) 28 degrees, 28 degrees, 62 degrees | d) 28 degrees, 28 degrees, 152 degrees | |

Which of the following sets of numbers could be the dimensions of a right triangle? |
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a) a = 12, b = 16, c = 20 | b) a = 2, b = 3, c = 5 | c) a = 10, b = 13, c = 38 | d) a = 2, b = 4, c = 6 | |

In a right triangle, the base = 8cm and the height = 10 cm. What is the value of the hypotenuse? |
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a) 6 cm | b) about 12.80 cm | c) 13 cm | d) about 12.81 cm | |

What does an r-value of -0.9954 mean about the data set? |
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a) You have a very strong positive correlation. | b) You have a very strong negative correlation. | c) Correlation is so strong that you can also assume causation. | d) Being a negative number means the trend line is a bad fit for the data. | |

Which of these function rules is a direct variation? |
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a) y = x + 5 | b) y = 2x - 7 | c) y = -3x | d) y = 18 / x | |

y = 0.99x - 2, where x is the number of MP3 files purchased and y is the final cost of your purchase. Which of these is NOT a possible meaning for the y-intercept? |
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a) You start at -2 MP3's. | b) Your online account had a $2 credit in it, so you will get to take off that $2 from today's purchase. | c) You have an online coupon code that will give you $2 your total purchase. | d) The website is giving new customers a $2 savings on your first purchase for setting up an account. | |

y = 0.99x - 2, where x is the number of MP3 files purchased and y is the final cost of your purchase. What does the slope tell you about the problem? |
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a) You only get 0.99 of an MP3 each time. | b) You have to buy more than 2 MP3's. | c) You spend $0.99 on MP3's. | d) You spend $0.99 more for every 1 MP3 you buy. | |

In the function rule y = 4x - 6, what does the slope tell me to do? |
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a) Go down 6 spaces, over 1 space right. | b) Go up 1 space, over 4 spaces right. | c) Go up 4 spaces, over 1 space right. | d) Go down one space, over 6 spaces right. | |

The slope measures..... |
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a) The change in time compared to change in height. | b) The steepness and direction of a line. | c) The pattern in the y-column of a table. | d) Where a linear function starts on a graph. | |

To calculate the slope you would find... |
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a) the change in y values divided by the change in x values. | b) the change in x values divided by the change in y values. | c) what you add to each x to get each y. | d) what you would multiply to each x to get each y. | |

If -x is greater than 5, then |
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a) x is less than 5 | b) x is less than -5 | c) x is greater than -5 | d) x is greater than 5 | |

Candy canes cost $1.50 each to buy, and chocolate moose munch bags cost $3.50 each. You have no more than $10 to spend. Which of these is NOT a possible solution? |
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a) 2 candy canes, 2 bags of moose munch. | b) 8 candy canes, 2 bags of moose munch | c) 3 candy canes, 1 bag of moose munch | d) 6 candy canes, 4 bags of moose munch | |

Two angles are complementary. One of the angles is 40 degrees. What is the other angle? |
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a) 50 degrees | b) 40 degrees | c) 140 degrees | d) 320 degrees | |

Two angles are supplementary. One of the angles is 57 degrees. What is the other angle? |
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a) 57 degrees | b) 33 degrees | c) 123 degrees | d) 303 degrees | |

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