How do you write an equation in point slope form that passes through (4,9) , (-2,-6)?
1 Answer
Jun 7, 2015
Equation of the line: y = ax + b. Find a and b by witing that the line passing at points (4, 9) and (-2, -6)
(1) 9 = 4a + b
(2) -6 = -2a + b.
Make (1) - (2) --> 15 = 6a ->
--> b = 9 - 4a = 9 - 10 = -1.
Equation:
