
SYNARTHSEIS_PROTOY_BA8MOY
Authored by giannis xantzis
Mathematics
9th Grade

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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
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
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