Mid Test Kelas 8

MID TEST School Unit : SMP Negeri 2 Cileunyi Subject : Mathematics Grade : VIII I. Choose the correct answer 1. 7a + 2b² - 3c – 6b² + 8c – 5a = …. a. 2a - 4b² - 5c c. 2a - 4b² + 5c b. 2a + 4b² - 5c d. 2a + 4b² + 5c 2. The factorize of x² + 6x + 8 is …. a. ( x + 2 )( x + 4 ) c. ( x + 2 )( x - 4 ) b. ( x - 2 )( x + 4 ) d. ( x - 2 )( x - 4 ) 3. The factorize of 9x² - 144 is …. a. ( 9x - 2 )( x + 16 ) c. ( 9x + 2 )( x - 16 ) b. ( 3x - 12 )( 3x + 12 ) d. ( 3x + 12 )( 3x + 12 ) 4. The following relations are shown by arrow diagram that the function is …. a. c.

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5. Which is the function of the following statement? a. Name of the students with them ages b. Name of the teachers with them classmate c. Name of the fathers with them children d. A number with its factors 6. Which of the following ordered pairs is the function? a. {( -1, 1), ( -1, 0 ), (1, 1 ), (1, 0)} b. {( -1, 3 ), ( 1, 5 ), ( 2, 6 ), ( 3, 10 )} c. {( 4, -2 ), ( 4, 2 ), ( 9, 3 ), ( 9, -3 )} d. {( 0, -2 ), ( 0, -1 ), ( 0, 1 ), ( 0, 2 )} 7. Given a function f(x) = -2x -1 , if f(x) = 15, so x = …. a. -8 b. -7 c. 7 d. 8 8. The image of (-3) by f : x → 8 + 2x – x2 is …. a. -11 b. -7 c. 7 d. 11 9. Given the ordered pairs {(3, 6 ), ( 3, 9 ), ( 5, 10 ), ( 7, 14 )}.

The relation of it’s …. a. less than c. more than b. the factor of d. the multiply of 10. The formula of a function of the ordered pair {( 2, -1 ), ( 4, -2 ), ( 6, -3 ), ( 8, -4 )} is …. a. f(x) = -½ x c. f(x) = -2x b. f(x) = ½ x d. f(x) = 2x II. Fill in the blank 1. -3x (2 – 4x + 5y) = …. 2. (2x - 4)(3x + 3) = …. 3. (3x – 2 )² = …. 4. 49x2 – 70x + 25 = ( ……… )2 5. The domain of the ordered pairs {( 0 , -1 ), ( 1 , 1 ), ( 2 , 3 ), ( 3 , 5 )} is …. 6. The domain of a function f(x) = -2 + 4x is { -1, 0, 1, 2, 3 }. The range of the function is …. 7. Given f(x) = 3 – 2x. The image of -5 of the function is …. 8. The formula of the function on the left is …. . .0

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9. Given f(x) = x3, then f(-3) = …. 10. Given f(x) = 2x – 3, if f(x) = 5 then x = …. III. Answer completely and correctly 1. A store walkway is to be built around a square park. If the walkway is 3 m wide, write an expression in factored form that represents the area of the walkway. Note: Using Polya Steps 2. Given f(x) = 4x – 5 and the domain D = {-2, -1, 0, 1, 2, 3} a. Draw the table of function b. Determine the ordered pairs of function c. Draw the graph of the function in the Cartesian coordinates.

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