What Ian the equation of the line passing through (-4,-6) and (-8,-7)

Question

use function notation to write equation

Answer 1

y = mx + b

 

m = [-7 - (-6)] / [-8 - (-4)] = -1 / -4 = 1/4

 

y = x/4 + b

 

Get b from either point.  Using (-8,-7),

 

-7 = (-8)/4 + b

 

b = -5

 

y = x/4 - 5