Linear Staar Review

Given f(x) = ¹/₃ (4 - x)² , what is the value of f(16)?

• 92

Answer explanation

Factor 184:  {1, 2, 4, 8, 23, 46, 92, 184}
4 is the largest perfect square
 $\sqrt{4\ \cdot\ 46}\ =\ \sqrt{4}\cdot\sqrt{46}\ =2\sqrt{46}$  

What is the equation in slope-intercept form of the line that passes through the point (2, −2) and is perpendicular to the line represented by y = ²/₅ x + 2?

• y = ⁵/2 x - 7

• y = ⁵/2 x + 7

• y = - ⁵/2 x - 3

• y = - ⁵/2 x + 3

What is the equation in slope-intercept form of the line that passes through the points (-4, 47) and (2, -16)?

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The line graphed on the grid represents the first of two equations in a system of linear equations.

If the graph of the second equation in the system passes through the points (12, 20) and (4, 12), which statement is true?

• The only solution to the system is (10, 5).

• The only solution to the system is (0, 14).

• The system has no solution.

• The system has an infinite number of solutions,

What is the domain of f(x) = 9 - x² ?

• f(x) ≥ 9

• All real numbers

• -3 ≤ x ≤ 3

• x ≤ 9

The graph of a function is shown on the grid.

Which ordered pair best represents the location of the y-intercept?

• ( ¹/₃ , 0)

• (0, -2)

• (0, ¹/3)

• (-2, 0)

What is the equation of the line that passes through the point (-2, 7) and has a slope of zero?

• x = 7

• y = -2

• x = -2

• y = 7

Which table doesn't show y as a function of x?

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The graph of linear function g is shown on the grid. What is the zero of g?

• -6

• -8

• 3

• -9