Introduction to Systems of Linear Equations — Quiz
Question 8 • Algebra 2 with Probability
The sum of two numbers is 12 The first number, x , is twice the second number, y Which system of equations could be used to find the two numbers?
Answer
A
x y is equal to 12; x is equal to 2 plus y
B
x plus y is equal to 12;x is equal to 2 plus y
C
x y is equal to 12; x is equal to 2 y
D
x plus y is equal to 12; x is equal to 2 y
Explanation
“The sum of two numbers is 12” translates to x + y = 12. “The first number, x, is twice the second number, y” translates to x = 2y, so choice D gives both equations.
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