Question

Use your answer from Part I to find the slope of a line going through each set of points. Then

describe the line as positive, negative, zero, or undefined. Show your work and explain your
answer.

A. (5, 7) and (-4,-2)

B. (1, 3) and (1, -10)

Answer 1

Explanation:

to find the slope of a line that passes for two given points we can use this formula (y2-y1)/(x2-x1). x and y inidcate the coordinates of the two points.

A (-2-7)/(-4-5) = (-9)/-9 = 1 (m is positive)

B (-10-3)/(1-1)) = the denominator is equal to zero, so the division is impossibile. This mean that m is undefined and the line is parallel to y axis