SOLUTION: 2x-5y=11, 4x+10y=18

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Question 168252: 2x-5y=11, 4x+10y=18
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!
2x-5y=11 ---------------> A
4x%2B10y=18 --------------> B
In A:
5y=2x-11 ---->cross%285%29y%2Fcross%285%29=%282x-11%29%2F5
y=%282%2F5%29x-%2811%2F5%29; y-intercept -11%2F5
f(y)=0:
%282%2F5%29x=%2811%2F5%29 ---> cross%282%2F5%29x%2Fcross%282%2F5%29=%2811%2F5%29%2F%282%2F5%29
x=%2811%2Fcross%285%29%29%28cross%285%29%2F2%29=11%2F2
In B:
10y=-4x%2B18 ---> cross%2810%29y%2Fcross%2810%29=%28-4x%2B18%29%2F10
y=%28-4%2F10%29x%2B%2818%2F10%29
Reduced: y=%28-2%2F5%29x%2B%289%2F5%29; y-intercept 9%2F5
f(y)=0:
%282%2F5%29x=9%2F5 ---> cross%282%2F5%29x%2Fcross%282%2F5%29=%289%2F5%29%2F%282%2F5%29
x=%289%2Fcross%285%29%29%28cross%285%29%2F2%29=9%2F2
See graph:
----->RED Line (11/2,-11/5)>>> A; GREEN Line (9/2,9/5) >>>> B
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Thank you,
Jojo