Question

What is the equation of a line that has a slope of -4/5 and point (0,-8)?

A. y = 4/5x + 8

B. y = -4/5x - 8

C. y = -4/5x + 8

D. y = 8x - 4/5

Answer 1

B

Explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = -
`(4)/(5)`

Note the line crosses the y- axis at (0, - 8) ⇒ c = - 8

y = -
`(4)/(5)` x - 8 ← equation of line