SOLUTION: find the equation of the line given two points in the standard line. #55 (-1,2) and (2.3). Please help me with this equation not sure how to solve. Thanks!!

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: find the equation of the line given two points in the standard line. #55 (-1,2) and (2.3). Please help me with this equation not sure how to solve. Thanks!!      Log On


   

Question 62039This question is from textbook beginning algebra
: find the equation of the line given two points in the standard line.
#55 (-1,2) and (2.3). Please help me with this equation not sure how to solve.
Thanks!! This question is from textbook beginning algebra

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
FIRST WE FIND THGE SLOPE (Y2-Y1/(X2-X1)
(3-2)/(2+1)
1/3 THIS THE SLOPE (m)IN THELINE EQUATION
Y=mX+b NOW WE SUBSTITUTE ONE SETR OF POINTS TO OBTAIN THE Y INTERCEPT(b)
2=1/3(-1)+b
2=-1/3+b
b=2+1/3
b=7/3
THEN WE HAVE THE EQUATION OF THE LIN WHICH IS
Y=-1/3X+7/3