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15. Rational Expressions and Equations

Direct & Inverse Variation

15. Rational Expressions and Equations

Direct & Inverse Variation

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Direct Variation

Direct Variation

Direct Variation Example 1

Direct Variation Example 1

Inverse Variation

Inverse Variation

Inverse Variation Example 2

Inverse Variation Example 2

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객관식
If $y$ varies directly as $x$ , and $y equals 18$ when $x equals 6$ , find $y$ when $x equals 10$ .
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객관식
The distance $d$ a car travels varies directly as the time $t$ . If the car travels 180 km in 3 hours, find how far it will travel in 5 hours.
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객관식
$p$ varies inversely as $q$ , and $p equals 18$ when $q equals 9$ . If $q equals 12$ , what is the value of $p$ ?
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객관식
The time $t$ (in hours) required to travel a fixed distance varies inversely as the speed $s$ (in m/hr). If it takes 6 hours to travel a certain distance at 50 mi/hr, how long will it take to travel the same distance at 75 mi/hr?
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