# 2016 STAAR Catch Phrases, 8th Grade: Question Preview (ID: 29076)

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19. Reflection over the y-axis: |
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a) the x value changes to its opposite, the y value stays the same. | b) the y value changes to its opposite, the x value stays the same. | c) both x and y values change to their opposites. | d) neither value changes. | |

16. Other words for slope... |
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a) rate, rate of change, and constant of variation (k) | b) rate, rate of change, and y-intercept | c) rate of change, y-axis, and y-intercept | d) constant of variation, y-intercept, y-axis | |

17. To calculate slope... |
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a) All of these answers are correct. | b) rise/run | c) change in y/change in x | d) stack and subtract | |

18. Translation... |
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a) orientation is the same, x AND y values may change. | b) orientation is different, x AND y values may change | c) orientation is the same, y value always stays the same. | d) orientation is different, x AND y values may change. | |

13. The equation of a vertical line is... |
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a) x = a number | b) y = a number | c) y = mx + b | d) not enough information | |

14. The slope of a horizontal line is... |
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a) zero | b) undefined | c) x = 3 | d) y = 3 | |

15. y = mx + b; In a word problem the b represents... |
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a) The starting amount. | b) The value at the point (0, y). | c) A one-time fee. | d) All of these answers are correct. | |

12. Right triangle: I need to find the length of one of the Non-Hypotenuse sides: |
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a) c^2 - b^2 = a^2 | b) angle + angle + angle = 180 | c) not possible | d) none of these answers | |

11. Right triangle: I need to find the length of the hypotenuse |
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a) a^2 + b^2 = c^2 | b) c^2 - b^2 = a^2 | c) angle + angle + angle = 180 | d) none of these answers | |

10. The inequality sign always points to the... |
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a) ...smallest quantity | b) ...left. | c) ...largest quantity. | d) ...right. | |

9. A graph is a function if... |
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a) ...it passes the vertical line test. | b) ...it is the prettiest graph. | c) ...looks like a C. | d) ...looks like an S. | |

8. y = mx + b, What does the y represent? |
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a) the dependent variable | b) the independent variable | c) the slope | d) the y-intercept | |

7. y = mx + b, What does the x represent? |
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a) the independent variable | b) the dependent variable | c) the slope | d) the y-intercept | |

5. y = mx + b What does the b represent? |
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a) the y-intercept on a graph. | b) the slope | c) the dependent variable | d) the independent variable | |

6. y = mx + b, What does the m represent? |
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a) the slope | b) the y-intercept | c) the dependent variable | d) the independent variable | |

4. The dependent variable in an equation is always... |
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a) ...the variable that is by itself on one side. (usually y) | b) ...all of the above. | c) ...the variable that changes depending on what you choose to replace the OTHER variable. | d) ...the variable that is graphed on the left side of the graph. | |

3. When adding exponential terms... |
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a) ...the bases AND exponents must be the same. | b) ...only the bases must be the same. | c) ...only the exponents must be the same. | d) ...throw up your hands and refuse to finish the test. | |

1. The slope of a vertical line is... |
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a) ...undefined. | b) ...zero. | c) ...one. | d) ...negative one. | |

2. The equation of a horizontal line is... |
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a) y = a number. | b) x = a number. | c) rise over run. | d) run over rise. | |

20. Rotation of 180 degrees: |
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a) both x and y values change to their opposites. | b) the x value changes to its opposite, the y value stays the same. | c) neither value changes. | d) the y value changes to its opposite, the x value stays the same. | |

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