Provide an appropriate response.Explain how the multiplication and addition principles are used in solving systems of equations using the addition method.
What will be an ideal response?
The multiplication principle might be used to obtain a pair of terms that are opposites. The addition principle is used to eliminate a variable. Once a variable has been eliminated, the multiplication and addition principles are also used to solve for the remaining variable and, after a substitution, are used again to solve for the variable that was eliminated.
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Slope - 
; y-intercept (0, 2)
A. 
B. 
C. 
D. 
Find the least common multiple (LCM) of the list of numbers.7, 14
A. 7 B. 21 C. 14 D. 98
Graph the integer on a number line.-2
A. 
B. 
C. 
D. 
The matrix associated with the solution to a system of linear equations in x, y, and z is given. Write the solution to the system, if it exists.
A. infinitely many solutions of the form x = 2 + 3z, y = 4 + z, z = z B. infinitely many solutions of the form x = 2 - 3z, y = 4 - z, z = z C. infinitely many solutions of the form x = 2 + 3z, y = 4 - z, z = z D. infinitely many solutions of the form x = 2 - 3z, y = 4 + z, z = z