Question Solve the equation r=−2 Evaluate 2−r=4Move the constant to the right-hand side and change its sign −r=4−2Subtract the numbers −r=2Solution r=−2 Show Solution Rewrite the equation x2+y2=4 Evaluate 2−r=4Rewrite the expression −r=−2+4Simplify the expression −r=2Square both sides of the equation (−r)2=22To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2 x2+y2=22Solution x2+y2=4 Show Solution Graph
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