What is the equation of the line, in slope-intercept form, that contains the points (-1,8) and (2,-1)? A) y= -3x +5 B) y= -x+5 C) y= x+5 D) y= -x+3

Correct Answer: Option A

From the given points, we can find the slope(m):

[tex]m= \frac{-1-8}{2-(-1)} =-3[/tex]

Thus the slope of the line containing the given two pints is -3.

Using slope, and a point we can write the equation as:

y - 8 = -3 ( x  + 1)
y - 8 = -3x -3 
y = -3x + 5