Determine whether a linear model might fit the data.
A. Yes
B. No
Answer: A
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Transform the equation to a form without an xy-term by a rotation of axes. Graph the curve.x2 + 2xy + y2 - 8x + 8y = 0
A. 
B. 
C. 
D. 
Translate to an equation, then solve.The difference of four times n and eight is equal to twenty-three less than n.
A. 4n - 8 = n - 23, n = -5 B. 8 - 4n = 23 - n, n = 5 C. 8n - 4n = 23 - n, n = -5 D. 4n - 8n = n - 23, n = 5
Provide an appropriate response.Which one of the following most closely resembles the graph of f(x) = a(x - h)2 + k if a > 0, h < 0, and 
A. 
B. 
C. 
D. 
Solve the problem.An electrician charges a fee of $55 plus $40 per hour. Let y be the cost in dollars of using the electrician for x hours. Find the slope-intercept form of the equation.
A. y = 55x + 40 B. y = 40x - 55 C. y = 55x - 40 D. y = 40x + 55