Question Solve the equation r=−28 Evaluate −7r=4Use b−a=−ba=−ba to rewrite the fraction −7r=4Rewrite the expression 7−r=4Cross multiply −r=7×4Simplify the equation −r=28Solution r=−28 Show Solution Rewrite the equation x2+y2=784 Evaluate −7r=4Use b−a=−ba=−ba to rewrite the fraction −7r=4Simplify the expression −71r=4Multiply both sides of the equation by LCD −71r×7=4×7Simplify the equation −r=4×7Simplify the equation −r=28Square both sides of the equation (−r)2=282To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2 x2+y2=282Solution x2+y2=784 Show Solution Graph
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