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Exam for 8th grade bilingual


Command: Choose one best answer

1.   The result of (x – y) (2x + 3y) is ....
a. 2x2 – 5xy – 3y2                           c. x2 – 5xy – y2
b. 2x2 + xy – 3y2                            d. x2 + xy – y2

2.   Simple form of  2(x – 3y + xy) – 2xy + 3x is ....
a. 4x – xy – 3y                               c. 4x – 6y + xy
b. 5x – xy – 4y                               d. 5x – 6y


3.   Factoring of   x2 – 19x – 20   is ...
a. (x – 4) (x + 5)                             c. (x + 1) (x – 20)
b. (x – 2) (x – 10)                           d. (x + 2) (x – 10))

4.   Factoring of   4x2 + 14x – 18   is …..
a. (4x – 3) (x + 6)                           c. (2x – 3) (2x + 6)
b. (4x – 2) (x + 9)                          d. (2x – 2) (2x + 9)

5.   From several sets of paired numbers, which is a function is ...
a
. {(p, 1), (q, 1), (r, 1), (r, 2)}        c. {(1, p), (1, q), (1, r), (2, r)}
b. {(p, 1), (q, 2), (r, 3), (r, 4)}        d. {(1, p), (2, q), (3, r), (4, r)}

6.  A function f defined by f (x) = ax + b is known that f (1) = 3 and f (–3) = 11. Values a 
     and  b  are respectively ...
     a. 2 and –1              b. –2 and 1                   c. 4 and 7                     d. –2 and 5

7.      Gradient line through the point and  is ….
a.
                    b.                          c.                             d. 2Simak

8. Completion of the system of equations 2x 3y = 11 and 3x + 4y = 9 is ...
a. x = 1, y = 2                                       c. x = 1, y = 2
b. x = 2,  y = 1                                        d. x = 1, y = 2

9. The sum of two numbers 32. Twice the first number plus three times the second number is 84. Value of the two numbers are ...
a. x = 14, y = 18                                        c. x = 10, y = 22
b. x = 12, y = 20                                        d. x = 8,   y = 24

10. The length of the hypotenuse of a triangle is 13 cm, the length of one side of the elbow-elbow is 5 cm. The triangle area is ....
a.
15 cm2                 b. 30 cm2                     c.  65 cm2                     d. 78 cm2


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