Linear Functions — Unit test

Question 1

Which equation represents a nonlinear function?

Revolt · Accepted Answer

x(y – 5) = 2

Question 2

If s(x) = 2 – x2 and t(x) = 3x, which value is equivalent to ?

Revolt · Accepted Answer

–439

Question 3

The table shows the population of Center City in various years. Use the data from 1990 and 2005 to create a linear model that predicts the population of the city (y) in a given year (x). In which year was the actual population of Center City most different from the value predicted by this model?YearCity Population1985194,9571990197,8001992199,5322000203,7502005206,5612012210,600

Revolt · Accepted Answer

1992

Question 4

If u(x) = x5 – x4 + x2 and v(x) = –x2, which expression is equivalent to ?

Revolt · Accepted Answer

–x3 + x2 – 1

Question 5

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is ?

Revolt · Accepted Answer

4x2 + 20x – 2

Linear Functions — Unit test Answers

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