5.4 Solving Systems by Subtraction and substitution Question: 8

Question

5.4 Solving Systems by Subtraction and substitution Question: 8

Error Analysis  A student incorrectly claimed the solution of this system of equations is (6,−2). What is the correct​ solution? What mistake might the student have​ made?

2x-5y=2

4x-5y=14

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Part 1

The correct solution is _______________

enter your response Above.

​(Type an ordered​ pair.)

Answer 1

correct answer is (6,2) the sign of the y coordinate is +, not -2.

2x -5y = 2

2(6) -5(2) = 12-10 = 2

4x -5y = 14

4(6) -5(2) = 24-10 = 14