find the point of intersection of the lines: 3x + 4y = -6 and 2x + 5y = -11
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find the point of intersection of the lines: 3x + 4y = -6 and 2x + 5y = -11
3x + 4y = -6Quote:
Originally Posted by heatherblack87
2x + 5y = -11
use elimination multiply the first by -2 and the second by three
(3x + 4y = -6)*-2
(2x + 5y = -11)*3
-6x-8y=12
6x+15y=-33
cancel the x's
-8y=12
15y=-33
7y=-21
y=-21/7
y=-3
now sub to find x
Small corrections in red.Quote:
Originally Posted by euclid2
I appreciate that, no wonder when i subed the y value the answer was so chaotic, lolQuote:
Originally Posted by mr fantastic