Question

4) What is the slope of the line joining (8, 15)
and 4,5)

Answer 1

5/2

Explanation:

Use rise over run, (y2 - y1) / (x2 - x1)

Plug in the points:

(y2 - y1) / (x2 - x1)

(5 - 15) / (4 - 8)

-10 / -4

= 5/2

So, the slope of the line is 5/2

Answer 2

5/2 or 2.5

Explanation:

Slope formula:
`(y^2-y^1)/(x^2-x^1)`

Plug in:

`(5-15)/(4-8)`

5 - 15 = -10

4 - 8 = -4

-10 5

---- = ----

-4 2

Slope is 5/2 or 2.5.

Hope this helped.