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9.7. Apgrieztā proporcionalitāte. Īpašības.

Authored by Inga Kauškale

Mathematics

9th Grade

Used 8+ times

9.7. Apgrieztā proporcionalitāte. Īpašības.
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10 questions

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1.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Nosaki, kuras no funkcijām IR apgrieztās proporcionalitātes funkcijas!

y=5y=5

y=3xy=\frac{3}{x}

xy=9xy=9

y=8+xxy=\frac{8+x}{x}

y=1x+2y=\frac{1}{x}+2

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Kuros kvadrantos atrodas funkcijas  y=−3xy=\frac{-3}{x}  grafiks?

I un III kv.

II un IV kv.

I un II kv.

II un III kv.

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nosaki funkcijas  y=1x+4y=\frac{1}{x+4}  definīcijas apgabalu!

 x∈(−∞;−4)∪(−4;+∞)x\in\left(-\infty;-4\right)\cup\left(-4;+\infty\right)  

 x∈(−∞;4)∪(4;+∞)x\in\left(-\infty;4\right)\cup\left(4;+\infty\right)  

 y∈(−∞;−4)∪(−4;+∞)y\in\left(-\infty;-4\right)\cup\left(-4;+\infty\right)  

 y∈(−∞;4)∪(4;+∞)y\in\left(-\infty;4\right)\cup\left(4;+\infty\right)  

4.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Nosaki kuras no funkcijām ir augošas!

y=−3xy=-\frac{3}{x}

y=−9−xy=-\frac{9}{-x}

y=x+1xy=\frac{x+1}{x}

y=4−3xy=\frac{4}{-3x}

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Nosaki funkcijas definīcijas apgabalu!

y∈(−∞;0)∪(0;+∞)y\in\left(-\infty;0\right)\cup\left(0;+\infty\right)

y∈(−∞;2)∪(2;+∞)y\in\left(-\infty;2\right)\cup\left(2;+\infty\right)

y∈(−∞;−2)∪(−2;+∞)y\in\left(-\infty;-2\right)\cup\left(-2;+\infty\right)

y∈(−∞;0]∪[0;+∞)y\in\left(-\infty;0\right]\cup\left[0;+\infty\right)

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nosaki apgrieztās proporcionalitātes koeficientu k, ja funkcija iet caur punktu A(0,5;-2)

k=−1k=-1

k=10k=10

k=1k=1

k=−10k=-10

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Nosaki abu funkciju krustpunkta koordinātes!

 y=4xy=\frac{4}{x}  un  y=xy=x  

 (2;2) un (−2;−2)\left(2;2\right)\ un\ \left(-2;-2\right)  

 (1;4)un (−1;−4)\left(1;4\right)un\ \left(-1;-4\right)  

 (−2;2)un (2;−2)\left(-2;2\right)un\ \left(2;-2\right)  

 (−4;1) un (−1; 4)\left(-4;1\right)\ un\ \left(-1;\ 4\right)  

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