Question

Which expression can be used to find the slope of a line containing the points (-3,2) and (7,-1)

-1-7/2-(-3)

7-(-3)/-1-2

-1-2/7-(-3)

2-(-3)/-1-7

Answer 1

The right expression is -1-2/7-(-3) which then gives you -3/10

Answer 2

Answer:
`(-1-2)/(7-(-3))`

Explanation:

The slope of a line passing from (a,b) and (c,d) is given by :-

`\text{slope}=(d-b)/(c-a)`

Given points of a line : (-3,2) and (7,-1)

Substitute a=-3, b=2, c=7, d=-1 in the above formula of slope we get,

The slope of a line containing the points (-3,2) and (7,-1) will be :-

`\text{slope}=(-1-2)/(7-(-3))`