Solving Systems of Linear Equations: Linear Combinations
Question 4 • FL-1200310-Algebra 1
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: 5x − 4y = 28Second equation: 3x - 9y = 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 −5.
C
The first equation should be multiplied by 9 and the second equation by 4.
D
The first equation should be multiplied by 9 and the second equation by −4.