COMPASS Practice Test 14

 A.  B.  C. 1. What is the value of when x = -5?  D. -3  E. 3

1. What is the value of when x = -5? Answer E

2. Simplify  A.  B.  C.  D.  E.

2. Simplify Answer E

3. In the figure below what is the distance between point A and B?  A. 11  B. 10  C.  D. 9  E. A B

3. In the figure below what is the distance between point A and B? A B Use the Pythagorean Theorem. 4 7

 A. 9  B. 10  C.  D. 14  E. 4. In the standard coordinate plane what is the distance between (-5, 2) and (1, -6)? Use the distance formula.

4. In the standard coordinate plane what is the distance between (-5, 2) and (1, -6)? If you do not like the distance formula you can use the Pythagorean Theorem

/3 = ?  A. -18  B.  C. 9  D.  E.

6. The parabola below is a graph of which equation? (-2, 4) (-4, 0) (0, 0)  A. y = (x - 2)  B. y = (x + 2)  C. y = -(x - 2)  D. y = -(x + 2)  E. y = x 2 + 4x + 8

Plug (-2, 4) into choice C y = -(x - 2) = -(-2 - 2) = -(-4) = = -12 False 6. The parabola below is a graph of which equation? (-2, 4) (-4, 0) (0, 0) Because the parabola points down we know that the x 2 term will be negative. (Negative Frown Face)  C. y = -(x - 2)  D. y = -(x + 2) Plug (-2, 4) into choice D y = -(x + 2) = -(-2 + 2) = -(0) = = 4 True

7. The solution of the equation below falls between what two integers? 2x + 8 = 7x + 20  A. -4 and -3  B. -3 and -2  C. -2 and -1  D. 1 and 2  E. 2 and 3

8. What is the solution of the system of equations below?  A. (3a, 2a)  B. (-3a, 2a)  C. (15a, 11a)  D. (15a, -11a)  E. (3a, -2a)

 D.  E. 9. What is the slope of the line in the standard coordinate plane determined by the equation 2x - 3y = 12?  A.  B.  C.

10. For all x and y, (x + 2y) 2 - 4y(x + y) = ?  A. x 2  B. x 2 - 4xy  C. x 2 - 2xy  D. x 2 + 8y 2  E. (x + 4y)(x - 4y) (x + 2y) 2 - 4y(x + y) =(x + 2y)(x +2y) - 4xy - 4y 2 = x 2 + 4xy +4y 2 - 4xy - 4y 2 = x 2