Select all of the equations below that are equivalent to:−49=xyUse properties of equality.Multi-select Choices:(A)−7=7xy(B)5=−7xy(C)−8=7xy(D)7=−7xy
Q. Select all of the equations below that are equivalent to:−49=xyUse properties of equality.Multi-select Choices:(A)−7=7xy(B)5=−7xy(C)−8=7xy(D)7=−7xy
Identify Equation & Task: Identify the original equation and understand the task.The original equation is −49=xy. We need to find which of the given choices are equivalent to this equation by using properties of equality.
Analyzing Choice (A): Analyze choice (A) –7=7xy. To check if this equation is equivalent to –49=xy, we can multiply both sides of the equation –7=7xy by 7 to see if we get the original equation. –7×7=(7xy)×7–49=xy This shows that choice (A) is equivalent to the original equation.
Analyzing Choice (B): Analyze choice (B) 5=−7xy. To check if this equation is equivalent to −49=xy, we can multiply both sides of the equation 5=−7xy by −7 to see if we get the original equation. 5×(−7)=(−7xy)×(−7)−35=xy This shows that choice (B) is not equivalent to the original equation.
Analyzing Choice (C): Analyze choice (C) –8=7xy. To check if this equation is equivalent to –49=xy, we can multiply both sides of the equation –8=7xy by 7 to see if we get the original equation. –8×7=(7xy)×7–56=xy This shows that choice (C) is not equivalent to the original equation.
Analyzing Choice (D): Analyze choice (D) 7=−7xy. To check if this equation is equivalent to −49=xy, we can multiply both sides of the equation 7=−7xy by −7 to see if we get the original equation. 7×(−7)=(−7xy)×(−7)−49=xy This shows that choice (D) is equivalent to the original equation.