Sarah solved this system of equations. 4x + 2y = - 14 - 10x - 7y = - 25 Step 1: 40x + 20y = - 140 - 40x - 28y = 100 Step 2: - 8y = - 40 Step 3: y = 5 Step 4: 4x + 2 (5) = - 14 Step 5: x = - 6 Step 6: Solution: (-6, 5) Did Sara find the correct solution to the system of equations? Explain. Yes, Sara found the correct solution. No, in step 1 she multiplied the right side of the second equation by - 4 instead of by 4. No, in step 4, she substituted the value of y back into the wrong equation to solve for x. No, in step 6, she switched the order of the solution. It should be (5, - 6).

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Mathematics

15 April, 12:28

Sarah solved this system of equations. 4x + 2y = - 14 - 10x - 7y = - 25 Step 1: 40x + 20y = - 140 - 40x - 28y = 100 Step 2: - 8y = - 40 Step 3: y = 5 Step 4: 4x + 2 (5) = - 14 Step 5: x = - 6 Step 6: Solution: (-6, 5) Did Sara find the correct solution to the system of equations? Explain. Yes, Sara found the correct solution. No, in step 1 she multiplied the right side of the second equation by - 4 instead of by 4. No, in step 4, she substituted the value of y back into the wrong equation to solve for x. No, in step 6, she switched the order of the solution. It should be (5, - 6).

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Answers (2)

Know the Answer?

Gordon Flowers · Answer 1

The answer is B "No, in step 1 she multiplied the right side of the second equation by - 4 instead of by 4"

Yusuf Hanson · Answer 2

A) Yes, Sara found the correct solution.

B) No, in step 1 she multiplied the right side of the second equation by - 4 instead of by 4.

C) No, in step 4, she substituted the value of y back into the wrong equation to solve for x.

D) No, in step 6, she switched the order of the solution. It should be (5, - 6).

Answer = B) No, in step 1 she multiplied the right side of the second equation by - 4 instead of by 4.

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