Find the equation in slopeintercept form of the line passing
Find the equation (in slope-intercept form) of the line passing through the points with the given coordinates. (4, 3), (-1, -3) Answer
Solution
Given coordintes are (4,3) and (-1,-3).
Need to find the equation of line in slope-intercept form.
Let the equation is y = mx+c
substitute (4,3) in y = mx+c
3 = 4m+c
c = 3-4m
Now substitute (-1,-3) in y = mx+c
-3 = (-1)m+c
-3 = -m + c
Substitute c = 3-4m in the above one.
-3 = -m + c
-3 = -m + 3 - 4m
-3 = 3 - 5m
5m = 3 + 3
5m = 6
m = 6/5
Substitute m = 6/5 in
c = 3-4m
c = 3-4(6/5)
c = 3-(24/5)
c = (15-24)/5
c = -9/5
equation of the line is y = (6/5)x+(-9/5)
Therefore, required equation of the line is y = (6/5)x-(9/5)
