Quiz about STAAR Review

Question 1

A rectangle has a length of (3+4x) and a width of 12.

A triangle has a base of 56 and a height of (2x-3).

The area of the rectangle and triangle are equal. Find x.

Accepted Answer

x=15

Answer

x=8

Answer

x=5

Answer

x=12

Question 2

The domain and range of part of a linear function are given:

x < 5

y > 2

Which graph could represent this part of the linear function?

Accepted Answer

Question 3

Which graph shows the solution set for the linear inequality $$y<3x-1$$

Accepted Answer

Question 4

Which statement about $$f\left(x\right)=-3\left(5\right)^x+2$$ is true?

Accepted Answer

The range is all real numbers less than 2.

Answer

The domain is all real numbers less than 5.

Answer

The range is all real numbers greater than 2.

Answer

The domain is all real numbers greater than 5.

Question 5

What is the equation of the asymptote of the graph of the function $$y=2\left(3\right)^x-4$$ ?

Accepted Answer

y = -4

Answer

y = 4

Answer

y > -4

Answer

y < 4

Question 6

Which expressions are equivalent to $$8x^2-48x+72$$ ?

Select TWO answers.

Accepted Answer

$$8\left(x^2-6x+9\right)$$

Accepted Answer

$$8\left(x-3\right)^2$$

Answer

$$-8\left(x+3\right)^2$$

Answer

$$-8\left(x^2+6x+9\right)$$

Question 7

Function k is defined as $$k\left(x\right)=x^2-16x+37$$ . What are the solutions to k(x)=0?

Hint* Use the quadratic formula.

Accepted Answer

$$x=8+3\sqrt[]{3}\ $$

and

$$\ x=8-3\sqrt[]{3}$$

Answer

$$x=16+6\sqrt[]{3}\ $$

and

$$\ x=16-6\sqrt[]{3}$$

Answer

$$x=-8+3\sqrt[]{3}\ $$

and

$$\ x=-8-3\sqrt[]{3}$$

Answer

$$x=-16+6\sqrt[]{3}\ $$

and

$$\ x=-16-6\sqrt[]{3}$$

Question 8

Which function best matches the graph?

Accepted Answer

$$g\left(x\right)=x^2-2x-3$$

Answer

$$g\left(x\right)=x^2+2x-3$$

Answer

$$g\left(x\right)=x^2-4x+3$$

Answer

$$g\left(x\right)=x^2+4x+3$$

STAAR Review

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