Question

Check my answers? GIving medal:

7. What is the slope of the line that passes throught the pair of points (1, 7) and (10, 1)?

a. 3/2
b. -2/3
c. -3/2
d. 2/3 <--

8. What is the slope of the line that passes through the points (-5.5, 6.1) and (-2.5, 3.1)?

a. -1
b. 1
c. -3 <--
d. d

9. what is the slope of the line that passes through the pair of points (-7/3, -3) and (-5, 5/2)?

a. 6/22 <--
b. -6/22
c. 22/6
d. -22/6,

Answer 1

Number seven Is B. -2/3

Answer 2

Slope is calculate by dividing the change in y-values by the change in x-values between a pair of points. For 7: (7-1)/(1-10) = 6/-9 = -2/3 For 8: (6.1-3.1)/(-5.5 - -2.5) = 3/-3 = -1 For 9: (5/2 - -3) / (-5 - -7/3) = 11/2 / -8/3 = -33/16. This is not an answer option, so double check the problem.