Semester Review

What graph best represents a system of equations that has NO SOLUTION?

(HINT: A the solution of a system is where the lines cross!)

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What is the RANGE of

y = -x² - 2x + 3 ?

(HINT: Range means y-values!)

• x ≤ 4

• x ≥ -4

• y ≤ 4

• y ≥ -4

What value of n makes the equation 4(0.5n - 3) = n - 0.25(12 - 8n) true?

(HINT: Put the left side in y₁, right side in y₂, 2nd, trace, 5, enter, enter, enter!)

• 3

• -9

• 0

• -15

What are the domain and range of

f(x) = -37?

(HINT: f(x) means y, so y = -37!)

• Domain: All real numbers greater than or equal to -37

  Range: All real numbers

• Domain: {-37}

  Range: All real numbers

• Domain: All real numbers

  Range: All real numbers greater than or equal to -37

• Domain: All real numbers

  Range: {-37}

Which statement best describes the y-intercept of the graph?

(HINT: The y-intercept is where the graph hits (vertical) the y-axis!)

• The water level increased by 0.25 ft per day.

• The maximum water level was 19.5 ft.

• The initial water level was 16 ft.

• The water level was measured for 14 days.

Which graph best represents the solution set of -4x ≤ 6y - 54?

(HINT: Re-write with y on the left!

6y - 54 ≥ -4x!)

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Given f(x), what is the value of f(16)?

HINT: y=, 2nd, graph!)

• -3

• 11

• 48

• 133

Which of these best represents the rate of change?

(HINT: rate of change means SLOPE, or RISE OVER RUN!)

• 200 ft²/gal

• 1/200 ft²/gal

• 400 ft²/gal

• 1/400 ft²/gal

What appears to be the DOMAIN of the graph?

(HINT: Domain means x! Look Left-to-Right!)

• -1 ≤ x ≤ 3

• -1 ≤ y ≤ 3

• 5.3 ≤ x ≤ 27

• 5.3 ≤ y ≤ 27

Which system of equations is represented by lines q and v?

(HINT: Bracket Math, y=, 2nd, graph!)

• 21x - y = 9

  5x + 6y = 40

• 3x - y = -27

  x + 2y = 16

• 21x - y = 9

  5x + 6y = 20

• 9x - y = -27

  x + 2y = 8