SOLUTION: Please help me solve these Equations. 1)Find the equation (in terms of x) of the line through the points (-5,3) and (5,-2) 2)Find the equation of the line passing through the

Algebra ->  Linear-equations -> SOLUTION: Please help me solve these Equations. 1)Find the equation (in terms of x) of the line through the points (-5,3) and (5,-2) 2)Find the equation of the line passing through the       Log On


   

Question 722531: Please help me solve these Equations.
1)Find the equation (in terms of x) of the line through the points (-5,3) and (5,-2)
2)Find the equation of the line passing through the points (6,4) and (-18,-40). Write your answer in the form y = m x + b.
3)Find the equation of the line with Slope = 8 and passing through (5,42). Write your equation in the form y=mx+b.
Answer by mananth(16949) About Me  (Show Source):
You can put this solution on YOUR website!
x1 y1 x2 y2
-5 3 5 -2

The general equation of the line when co-ordinates of two points are given is

%28y-%09y1%29%2F%28%09y1-y2%29+=+%28x-x1%29%2F%28x1-x2%29






+%09-10++++++%09%28y-%09-3++++++%09%29+=%095++++++%09%28x-%09-5++++++%09%29

-10 y- 30 = 5 x -25

-10 y= 5 x+ 5
/ -10
y= - 1/ 2 x - 1/ 2

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slope 8, (5,42)
Point slope form of equation
y-y1=m(x-x1)
y-42=8(x-5)
y-42=8x-40
y=8x+2