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Constant Function

The graph of ...

Question

The graph of a constant function $f (x) = k$ is?

A straight line parallel to

X

-axis

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A straight line parallel to

Y

-axis

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A straight line passing through orgin

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None

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Solution

The correct option is A A straight line parallel to $X$ -axis
A graph of a constant function is always a horizontal line.
Horizontal line is a line which is parallel to $x$ -axis.

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P V =

(P)

(ρ)

P V / T

y -

x -

P V =

(P)

(ρ)

P V

Select the correct graphs

a) The P-V graph at constant temperature is a rectangular hyperbola.

b) The P-V graph is a straight line parallel to the Y-axis.

c) P-V graph at constant temperature is a straight line passing through the origin

d) V-T graph at constant pressure is a straight line passing through the origin.

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