If Y Varies Directly as X, Find the Direct Variation $\frac { 1 } { 16 }$

question 262

Multiple Choice

If y varies directly as x, find the direct variation equation for the situation.
-For a resistor in a direct current circuit that does not vary its resistance, the power that a resistor must dissipate is directly proportional to the square of the voltage across the resistor. The resistor must dissipate $\frac { 1 } { 16 }$ watt of power when the voltage across the resistor is 7 volts. Find the power that the resistor must dissipate when the voltage across it is 14 volts.

• A) \(\frac { 1 } { 4 }\) watt
• B) \(\frac { 7 } { 16 } \mathrm { watt }\)
• C) \(\frac { 49 } { 16 }\) watts
• D) \(\frac { 1 } { 8 } w a t t\)

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