Provide an appropriate response.Why is the slope of a horizontal line equal to zero? Give an example.
What will be an ideal response?
Answers may vary. One possibility: The slope of a horizontal line is equal to zero because the y-values do not change as the x-values change. For example, the points (3, 4) and (7, 4) are two points on a horizontal line. The slope of this line is zero because m = 
= 
= 0.
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Find the product.(x - 8y)(2x - 6y)
A. x2 - 22xy - 22y2 B. x2 - 22xy + 48y2 C. 2x2 - 22xy + 48y2 D. 2x2 - 22xy - 22y2
Let A and B be sets with cardinal numbers, n(A) = a and n(B) = b, respectively. Decide whether the statement is true or false.n(A ? B) = n(A) - n(B)
A. True B. False
Tell whether the graph opens upward or downward and whether the graph is wider, narrower, or the same as f(x) = x2.f(x) = -.8x2 + 2
A. Upward, wider B. Downward, wider C. Upward, narrower D. Downward, narrower
Convert the measure from degrees to radians. Express your answer as a multiple of ?.270°
A. - 
B. - 
C. 
D. 3?