Solving Systems of Linear Equations: Linear Combinations — Quiz
Question 2 • Algebra I
To eliminate the y -terms and solve for x in the fewest steps, by which constants should the equations be multiplied by before adding the equations together? First Equation: 5 x minus 4 y is equal to 28 Second equation: 3 x minus 9 y is equal to 30
Answer
A
The first equation should be multiplied by 3 and the second equation by 5 .
B
The first equation should be multiplied by 3 and the second equation by negative 5 .
C
The first equation should be multiplied by 9 and the second equation by negative 4 .
D
The first equation should be multiplied by 9 and the second equation by 4 .