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anonymous
 one year ago
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
anonymous
 one year ago
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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iGreen
 one year ago
Best ResponseYou've already chosen the best response.2Use the slope formula. \(\sf m = \dfrac{y_2y_1}{x_2x_1}\)

iGreen
 one year ago
Best ResponseYou've already chosen the best response.2(4, 7), (4, 8) x1 y1 x2 y2

iGreen
 one year ago
Best ResponseYou've already chosen the best response.2Can you plug those numbers in?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i did the math isnt it undefined

iGreen
 one year ago
Best ResponseYou've already chosen the best response.2Yep! We end up with 0 at the bottom, and we can't divide by 0 so undefined is correct.
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