Alg 1 Semester Exam Review

Which of the following relations is a function? I. (0, 0), (0, 1), (0, 2) II. (0, 0), (1, 1), (2, 4) III. (0, 0), (1, 2), (2, 2) IV. (0, 0), (1, 2), (1, 3)

• I, II, and III only

• I and II only

• II and III only

• III and IV only

What is the domain of the function graphed below?

• 0 < x ≤ 5

• 2 < x ≤ 5

• 0 < x ≤ 4

• 0 < x < 2

Which of the following is not a correct description of the graph of the function y = -2x - 7?

• The graph of the function contains the point (-2, -3), and when the value of x increases by 1 unit, the value of y decreases by 2 units.

• The graph of the function contains the points (-1, -5), (2, -11), and (4, -15).

• The graph of the function is a line that passes through the point (0, -7) with a slope of -2.

• The graph of the function contains the points (0, -7), (1, -9), and (3, -1).

The sum of the perimeters of two different squares is 32 centimeters, and the difference between their perimeters is 8 centimeters. If x represents the side length of the larger square and y represents the side length of the smaller square, which of the following systems of equations could be used to find the dimensions of the squares?

• x + y = 32

• 4x - 4y = 8

• 2x + 2y = 32

• 4x + 4y = 32

• x - y = 8

Some values for two linear equations are shown in the tables below. What is the solution to the system of equations represented by these tables?

• (2, 3)

• (3, 5)

• (−1, 1)

• (5, 11)

The graph of a quadratic function is shown below. Which statement about this graph is not true?

• The graph has a y-intercept at (0, 8).

• The graph has a maximum point at (−1, 9).

• The graph has an x-intercept at (2, 0).

• The graph has the y-axis as a line of symmetry.

A dentist made the scatterplot below to show the number of cavities her patients had as it relates to the number of times they flossed their teeth each week. Which of the following best describes the correlation for the data?

• Positive correlation

• Nonlinear correlation

• Negative correlation

• No correlation

A graph is shown below. Which of the following equations are represented by the graph?

• II and IV

• I and III

• II and III

• I and IV

Which table shows the same relationship as y = -x^2 + 3x ?

• A. x: -2, -1, 0, 1, 2 y: -2, -2, 0, 4, 10

• B. x: -2, -1, 0, 1, 2 y: -2, -1, 0, 1, 2

• C. x: -2, -1, 0, 1, 2 y: -10, -4, 0, 2, 2

• D. x: -2, -1, 0, 1, 2 y: -10, -4, 0, 4, 10

The value of y varies directly with x . Which function represents the relationship between x and y if y = 20/30 when x = 30 ?

• A. y = 200x

• B. y = 2/3x

• C. y = 110/30x

• D. y = 9/2x

Tags

TEKS.MATH.2A.6L

TEKS.MATH.A.2D