SOLUTION: What is an equation for the line that passes through points (-1,-4) and (1,4) write the equation in slope intercept form

Algebra ->  Points-lines-and-rays -> SOLUTION: What is an equation for the line that passes through points (-1,-4) and (1,4) write the equation in slope intercept form      Log On


   

Question 918705: What is an equation for the line that passes through points (-1,-4) and (1,4) write the equation in slope intercept form
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Compute the slope.
%284-%28-4%29%29%2F%281-%28-1%29%29=8%2F2=4

Solve the slope-intercept form equation for b.
y=mx%2Bb
b=y-mx

Pick either of the points to be contained on the line and evaluate b.
Using (1,4),
b=4-4%2A1
b=0

Form the slope-intercept equation for this line.
highlight%28y=4x%29


--
b=0 so not needed to be shown in the resulting equation.