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SYNARTHSEIS_PROTOY_BA8MOY

Authored by giannis xantzis

Mathematics

9th Grade

SYNARTHSEIS_PROTOY_BA8MOY
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν f(x) = 3x2 + x, πόσο είναι το f(2) ;

10

12

14

16

Answer explanation

Αν f(x) = 3x2 + x, τότε

f(2) = 3.22 + 2

f(2) = 3.4 + 2

f(2) = 12 + 2

f(2) = 14

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν f(x) = 3x2 + x, πόσο είναι το f(-2) ;

10

12

14

16

Answer explanation

Αν f(x) = 3x2 + x, τότε

f(-2) = 3.(-2)2 + (-2)

f(2) = 3.4 - 2

f(2) = 12 - 2

f(2) = 10

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν f(x) = |3 - x| + 5, πόσο είναι το f(5) ;

3

5

7

9

Answer explanation

Αν f(x) = |3 - x| + 5, τότε

f(5) = |3 - 5| + 5

f(5) = |-2| + 5

f(5) = 2 + 5

f(5) = 7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν f(x) = |x - 3| + 5, βρείτε τα για τα οποία

το f(x) = 6.

x = 2 ή x = 4

x = 2 ή x = -2

x = 4 ή x = -4

Answer explanation

Αν f(x) = |x - 3| + 5, και

f(x) = 6 τότε

|x - 3| + 5 = 6

|x - 3| = 6 - 5

|x - 3| = 1

x - 3 = 1 ή x - 3 = - 1

x = 1 + 3 ή x = - 1 + 3

x = 4 ή x = 2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν f(3x) = 3x + 7, ποια είναι

η f(x) ;

f(x) = 3x + 7

f(x) = 10

f(x) = x + 7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν f(5x) = 10x + 9,

ποια είναι η f(x) ;

f(x) = 2x + 9

f(x) = 10x + 9

f(x) = 5x + 9

Answer explanation

Media Image

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Αν f(x + 7) = 2x + 15,

ποια είναι η f(x) ;

f(x) = 2x + 15

f(x) = 2x + 1

f(x) = 2x + 7

Answer explanation

Media Image

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