Question

Find the rule for the following set of data.

y =

2/5 x + 31/5
5/2 x - 2
5/2 x + 2

Answer 1

`y = (5)/(2) x + 2`

Explanation:

Find slope which is also referred to as m:

m = (y2 - y1) / (x2 - x1)

= 7-12 / 2 - 4

= -5 / -2

= 5/2

y = mx + b

17 = 5/2(6) + b

17 = 15 + b

b = 2

y = 5/2x + 2