If Y Varies Directly as X, Find the Direct Variation

question 281

Multiple Choice

If y varies directly as x, find the direct variation equation for the situation.
-If the resistance in an electrical circuit is held constant, the amount of current flowing through the circuit is directly proportional to the amount of voltage applied to the circuit. When 4 volts are applied to a circuit,
40 milliamperes of current flow through the circuit. Find the new current if the voltage is increased to 13 volts.

• A) 52 milliamperes
• B) 140 milliamperes
• C) 130 milliamperes
• D) 117 milliamperes

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