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NY Regents Algebra I functions and statistics quiz quiz

13questions. Pick an answer and you'll see why right away.

  1. If f(x)=x2βˆ’5x+2f(x) = x^2 - 5x + 2, what is f(βˆ’1)f(-1)?

  2. Which relation is NOT a function?

  3. A graph passes through (2,7)(2, 7) and (6,23)(6, 23). What is the average rate of change over 2≀x≀62 \leq x \leq 6?

  4. A population starts at 400 and doubles every year. Which model is correct?

  5. A table shows outputs 6,10,14,186, 10, 14, 18 as xx goes 0,1,2,30, 1, 2, 3. The relationship is

  6. What is the axis of symmetry of y=x2+8x+3y = x^2 + 8x + 3?

  7. The vertex form y=(xβˆ’5)2βˆ’4y = (x - 5)^2 - 4 describes a parabola with vertex

  8. For the data set 3,6,6,8,223, 6, 6, 8, 22, how do the mean and median compare?

  9. A data set has Q1=20Q_1 = 20 and Q3=32Q_3 = 32. Using the 1.5Γ—IQR1.5 \times \text{IQR} rule, what is the upper outlier boundary?

  10. A box plot is best used to display

  11. For the line of best fit y^=2.5x+8\hat{y} = 2.5x + 8, what does the slope represent if xx is hours and yy is pages read?

  12. A model predicts y^=18\hat{y} = 18 but the actual value is 15. What is the residual, and what does it mean?

  13. A strong positive correlation between two variables means