Question Solve the equation r=−72 Evaluate 8=−9rUse b−a=−ba=−ba to rewrite the fraction 8=−9rSwap the sides of the equation −9r=8Rewrite the expression 9−r=8Cross multiply −r=9×8Simplify the equation −r=72Solution r=−72 Show Solution Rewrite the equation x2+y2=5184 Evaluate 8=−9rUse b−a=−ba=−ba to rewrite the fraction 8=−9rSimplify the expression 8=−91rMultiply both sides of the equation by LCD 8×9=−91r×9Simplify the equation 72=−91r×9Simplify the equation 72=−rRewrite the expression r=−72Square both sides of the equation r2=(−72)2To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2 x2+y2=(−72)2Solution x2+y2=5184 Show Solution Graph
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