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Whats the intercepts of 2x+y=1 and x-2y=8

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Answer:

Explanation:

I will assume you want the y-axis intercepts

arrange each equation into the form y = mx + b <==b is y-axis intercept

2x+y =1

y = -2x+1 <==== y axis intercept = 1

x -2y = 8

2y = x-8

y = 1/2x -4 <==== - 4 is the y axis intercept

Another way to find the y-axis intercept is to realize this occurs when x = 0

put x = 0 into the equations to find the intercept value

2x+y =1

2(0) + y = 1

y =1 <=====intercept

x-2y = 8

0 - 2y = 8

y = -4 <=====intercept

To find the where the two lines intersect, equate them

-2x+1 = 1/2x-4

5 = 2.5x

x = 2 then y = -2x+1 = -3 point of intersection (2,-3)

User Tliebeck
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