Provide an appropriate response.Why is the slope of a vertical line undefined?
What will be an ideal response?
Answers may vary. One possibility: Let (a, b) and (a, c), b ? c, be any two different points on a vertical line. The slope of the line = 
= 
= 
. Division by zero is undefined.
Mathematics
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Find the surface area generated by rotating the lemniscate r² = 10cos2? about the line ? = ?.
What will be an ideal response?
Mathematics
Solve the equation.
- 
= -6
A. 19 B. -19 C. 17 D. -17
Mathematics
Perform the indicated operations. Write the result using a radical. Assume that all variables represent positive values.
? 
A. 
B. 
C. 
D. 
Mathematics
Write the percent as a decimal.0.7%
A. 0.007 B. 0.008 C. 0.07 D. 0.7
Mathematics