可汗学院SAT数学题目及答案:Graphing linear equations【1】!可汗学院SAT数学真题资料在备考考生使用比较多,为了方便大家做数学练习,智课网为大家整理了可汗学院SAT数学题目及答案复习资料,希望对大家备考有帮助。

  1.The average price of a certain type of coffee worldwide was $0.51 per pound in 2008. The price per pound increased about $0.18 each year until 2014, and is expected to do so for the next two years. Which of the following graphs represents the relationship between years after 2008, t, and price per pound, P, in dollars, of this coffee worldwide?

  可汗学院SAT数学题目及答案

  2. A farmer observes that the demand for corn Q, in thousands of bushels per month, and price P, in dollars per bushel, are related by a linear function. If a demand of 2,500 bushels per month corresponds to a price of $4.00 per bushel, and a demand of 3,000 bushels per month corresponds to a price of $3.20 per bushel, which of the following graphs represents the relationship between P and Q?

  可汗学院SAT数学题目及答案

  3. The lines f and g are graphed BELOW in the xy-plane. Line g can be written as the equation y=ax+b, where a and b are constants. Which of the following equations represents line f? Please choose from one of the following options.

  可汗学院SAT数学题目及答案

  A. y=ax−b

  B. y=−ax+b

  C. −y=ax+b

  D. x=ay+b

  Correct Answer: C Difficult level: 3

  可汗学院SAT数学题目及答案

  5. The equation 6y+12x=18 is graphed in the xy-plane. Which of the following equations has a graph that is perpendicular to the graph of the above equation?

  A. y=-2x+3

  B. y=(1/2)x+3

  C. y=2x+3

  D. y=-(1/2)x+3

  Correct Answer: B Difficult level: 3

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