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Given below is the graph of the equation:

$F = 95 C + 32$ , where F and C represent Fahrenheit and Celsius scale respectively. The Celsius scale C is taken along the x-axis and Fahrenheit scale F is taken along the y-axis. What is the value of F when C has the values $0 °, 10 °, 20 °$ respectively?

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− 32 °, − 50 °, − 68 °

− 32 °, − 50 °, 68 °

32 °, − 50 °, − 68 °

32 °, 50 °, 68 °

answer is D.

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Detailed Solution

Given equation is

F = 95 C + 32

.
The C values are

0 °, 10 °, 20 °

.
Substitute

C = 0 °

F = 95 C + 32

F = 95 × 0 + 32

F = 0 + 32

F = 32 °

Substitute

C = 10 °

F = 95 C + 32

F = 95 × 10 + 32 F = 18 + 32

F = 50 °

When

C = 20 °

F = 95 × 20 + 32 F = 36 + 32

F = 68 °

C	$0$	$10^{o}$	$20^{o}$
F	$32^{o}$	$50^{o}$	$68^{o}$

The points are

0, 32, 10, 50 a n d 20, 68

.
Hence, 4 is the correct option.

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