Select all of the equations below that are equivalent to:−91y=70Use properties of equality.Multi-select Choices:(A) 13y=−770(B) −7y=1370(C) 7y=−1370(D) −13y=770
Q. Select all of the equations below that are equivalent to:−91y=70Use properties of equality.Multi-select Choices:(A) 13y=−770(B) −7y=1370(C) 7y=−1370(D) −13y=770
Identify Equations: We need to identify which equations are equivalent to –91y=70 by using properties of equality. We will check each option by transforming the original equation and comparing it to the given choices.
Check Option (A): Let's start with option (A) 13y=−770. To check if this is equivalent, we can simplify the right side of the equation by dividing 70 by −7. −770=−10So, the equation becomes 13y=−10. This is not equivalent to −91y=70 because the coefficients of y and the constants do not match.
Check Option (B): Now let's check option (B) −7y=1370. We simplify the right side of the equation by dividing 70 by 13. 1370 does not simplify to an integer, and the coefficient of y in the original equation is −91, not −7. Therefore, this equation is not equivalent to −91y=70.
Check Option (C): Next, we check option (C) 7y=−1370. We simplify the right side of the equation by dividing 70 by −13.−1370=−1370The equation becomes 7y=−1370. This is not equivalent to −91y=70 because the coefficients of y are not the same (7 vs. −91).
Check Option (D): Finally, we check option (D) –13y=770. We simplify the right side of the equation by dividing 70 by 7.770=10The equation becomes –13y=10. To see if this is equivalent to –91y=70, we can multiply both sides of –13y=10 by 7 to see if we get the original equation.–13y×7=10×7–91y=70This matches the original equation, so option (D) is equivalent to –91y=70.