Complete the sentence with the appropriate word.

Line CD contains points A (4, -7) and B (4, 8). The slope of line CD is _____.

A.) zero
B.) undefined
C.) positive
D.) negative

The best and most correct answer among the choices provided by your question is the second choice or letter B. The slope of line CD is undefined.

By two-point slope form:
m=(y2-y1)/(x2-x1)
m=(8+7)/(4-4)
m=15/0 (undefined)

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Complete the sentence with the appropriate word. Line CD contains points A (4, -7) and B (4, 8). The slope of line CD is _____. A.) zero B.) undefined C.) positive D.) negative

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Complete the sentence with the appropriate word.

Line CD contains points A (4, -7) and B (4, 8). The slope of line CD is _____.

A.) zero
B.) undefined
C.) positive
D.) negative