Question

What is the slope intercept form of the equation of the line that passes through the points 9,5 and 4,1

Answer 1

y = 4/5 x - 2 1/5

Explanation:

1. Find the slope:

1 - 5 = -4 = 4 = m

4 - 9 -5 5

2. Find b by plugging in the slope you just found and one of the points given into y = mx + b

1 = 4/5 ( 4) + b

1 = 16/5 + b

- 2 1/5 = b

3. Plug in the m and the b you found into y = mx + b

y = 4/5 x - 2 1/5