SOLUTION: write an equation in slop-intercept form for the line passing through each pair of points (9,-1) (6,-2) if you could talk me through this problem that would be great!

Algebra ->  Linear-equations -> SOLUTION: write an equation in slop-intercept form for the line passing through each pair of points (9,-1) (6,-2) if you could talk me through this problem that would be great!      Log On


   



Question 136639: write an equation in slop-intercept form for the line passing through each pair of points (9,-1) (6,-2) if you could talk me through this problem that would be great!
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
FIRST YOU NEED TO FIND THE SLOPE (m).
m=(Y2-Y1)/(X2-X1)
m=(-2+1)/(6-9)
m=-1/-3=1/3
NOW REPLACE THE X & Y TERMS IN THE LINE EQUATION [Y=mX+b] & SOLVE FOR THE Y INTERCEPT (b).
-1=9*1/3+b
-1=9/3+b
b+3=-1
b=-1-3
b=-4 THE Y INTERCEPT.
Y=X/3-4 IS THIS LINE EQUATION.
+graph%28+300%2C+200%2C+-6%2C+15%2C+-10%2C+10%2C+x%2F3+-4%29+ (graph 300x200 pixels, x from -6 to 15, y from -10 to 10, x/3 -4).