Question

These points are linear.

Find the slope.
Х 2 4. 6 8 10
y 7 13 19 25 31
Hint: First calculate the change
between each y-value.

Answer 1

3

Explanation:

Select an ordered pair: (2, 7)

Select another ordered pair: (6, 19)

slope = (difference in y)/(difference in x)

slope = (19 - 7)(6 - 2)

slope = 12/4

slope = 3

Answer 2

Explanation:

Pick any two points.

(2 ,7) & (4, 13)

x₁ = 2 ; y₁ = 7 & x₂ = 4 ; y₂ = 13

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

`=(13-7)/(4-2)\\\\\\=(6)/(2)\\\\\\= 3`