|
Question 918894: What is the solution to the system?
Line 1
x y
–1 –2
1 2
Line 2
x y
–2 10
4 1
( ____ ,_____ )
Found 2 solutions by ewatrrr, Alan3354: Answer by ewatrrr(24785) (Show Source): Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! What is the solution to the system?
Line 1
x y
–1 –2
1 2
Line 2
x y
–2 10
4 1
==================
Put the points in parentheses:
Line 1: (-1,-2) and (1,2)
Line 2: (-2,10) and (4,1)
----
Get equations of the lines.
Line 1: (-1,-2) and (1,2)
Find the slope, m
m = diffy/diffx = (-2-2)/(-1-1) = 2
Use y = mx + b and either point to find b, the y-intercept
Using (1,2): 2 = 2*1 + b --> b = 0
y = 2x is an equation of Line 1
----
Get the eqn of line 2 the same way.
|
|
|
| |