Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. {(6, 7), (7, 6), (-6, -7), (-7, -6)}
B. {(6, -7), (6, 7)}
C. {(6, 7), (-6, 7), (6, -7), (-6, -7)}
D. {(-6, -7), (-7, -6)}
Answer: C
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Provide an appropriate response.What does the graph of the equation 
look like?
A. The y-axis B. The xy-plane C. The z-axis D. The yz-plane
Answer the question.How can the graph of f(x) = -7x2 + 1 be obtained from the graph of 
A. Stretch it vertically by a factor of 7, reflect it across the x-axis, and shift it 1 units upward. B. Stretch it vertically by a factor of 7, reflect it across the y-axis, and shift it 1 units upward. C. Stretch it horizontally by a factor of 1, reflect it across the x-axis, and shift it 7 units upward. D. Stretch it horizontally by a factor of -7, reflect it across the x-axis, and shift it 1 units downward.
Find area of figure. Round to the nearest hundredth if necessary.A triangle whose base is 10 in. and height is 6 in.
A. 136 in.2 B. 16 in. C. 60 in.2 D. 30 in.2
Perform the matrix operation.Let A = 
and B = 
. Find 2A + 3B.
A. 
B. 
C. 
D. 