HardMath· Algebra· Systems of two linear equations in two variables· SPR
If satisfies the system of equations above, what is the value of y ?
Correct answer: 3/2
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Explanation
The correct answer is . One method for solving the system of equations for y is to add corresponding sides of the two equations. Adding the left-hand sides gives , or 4y. Adding the right-hand sides yields . It follows that . Finally, dividing both sides of by 4 yields or . Note that 3/2 and 1.5 are examples of ways to enter a correct answer.
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id cb_question_bank:03422a73-15ea-4c0a-b655-c48c93adbcf6 · question d1b66ae6 · IBN 070615-DC
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