STAAR Algebra

A graph of a quadratic function is shown. What are the x-intercepts of the function?

Select the TWO correct circles that represent the points.

Tags

AI.9.7.A

An artist bought a set of 10 paintbrushes that contained x small paintbrushes and y large paintbrushes. The number of small paintbrushes in the set was 4 times the number of large paintbrushes in the set.

Which system of equations can be used to find the numbers of small paintbrushes and large paintbrushes in the set?

• x + y = 10

  x = 4y

• x - y = 10

  x = 4y

• x + y = 10

  y = 4x

• x - y = 10

  y = 4x

Tags

AI.9.2.I

A fish tank is being drained at a constant rate. The graph shows the linear relationship between the volume of water in the fish tank in liters and the time in minutes the tank has been draining.

Which value best represents the rate of change of the volume of water in the fish tank with respect to time?

Tags

AI.9.3.B

• x + 3

• 2x - 5

• 2x - 3

• x + 5

• x - 3

Tags

AI.9.10.E

What is the domain of the part of the function shown?

• All real numbers greater than or equal to -1.

• All real numbers greater than or equal to 1.

• All real numbers.

• All real numbers greater than or equal to -1 and less than or equal to 5.

Tags

AI.9.6.A

Which function best represents the relationship shown in the graph?

Tags

AI.9.2.C

What are the slope and the y-intercept that best represent this function?

The slope is ​ (a)   and the y-intercept is ​ (b)   .

• 2

• -4

• -0.5

• 0.5

• 4

Tags

AI.9.3.C

The graph of a quadratic function is shown on the grid.

Which statement is best supported by the graph?

• The function has a zero at 6.

• The minimum value of the function is 9.

• The vertex of the graph is (9, -3),

• The equation of the axis of symmetry of the graph is x = -3.

Tags

AI.9.7.A

New houses are being built in a neighborhood. The table shows the exponential change in the number of houses in the neighborhood over the last 6 years. Which exponential function best models the data?

Tags

AI.9.9.E

A system of linear equations is shown. What is the value of x in teh solution to this system of equations?

• 5

• -5

• 8

• -8

Tags

AI.9.5.C