Question

A line passes through the point (-1,-2) and has a slope of

-5.

Write an equation in slope intercept form for this line.

Answer 1

y = - 5x - 7

Explanation:

A line has a function:

y = ax + b

Because the line has a slope of - 5

=> a = - 5

=> y = - 5x + b

Because the line goes through point (- 1; - 2)

=> - 2 = (- 5).(- 1) + b

=> 5 + b = - 2

=> b = - 7

=> The slope intercept from of the line:

y = - 5x - 7