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Question

Given equation: 300y=500x+1900 where 'x' = time (hours)and 'y' = Intensity (in cd)

For plotting the graph of the equation, fill the table with the correct value of p and q obtained from the graph.


A
p=8 and q=5
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B
p=8 and q=13
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C
p= 8 and q= 5
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D
p=3 and q=8
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Solution

The correct option is B p=8 and q=13
Given equation:
300y=500x+1900

Put the given value of x from the table in the respective equation and find the corresponding unknown values.

If you put x=1,then the value of y from
the equation is:

300y=500×1+1900
300y=500+1900=2400
y=2400300=8

So, value of p will be 8.

∴ (1,8) will be a point on the straight line in the graph.

Similarly if you put x=4,then the value of y
from the equation is:

300y=500×4+1900=2000+1900
y=3900300=13

So, value of q will be 13.

∴ (4,13) will be a point on the straight line in the graph.

The plotting of the graph is shown as:



∴ The table can be filled as:
x14y813

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