Question

Refer to the data above. What number represents the slope of the line, if the points on the graph above were joined?

A. 1/1

B. 1/40

C. 40/1

D. 240/1

(Those are all fractions)

Answer 1

slope = 40

Explanation:

Calculate the slope m using the slope formula

m =
`(y_(2)-y_(1) )/(x_(2)-x_(1) )`

with (x₁, y₁ ) = (2, 80) and (x₂, y₂ ) = (4, 160) ← 2 points on the line

m =
`(160-80)/(4-2)` =
`(80)/(2)` =
`(40)/(1)` = 40