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January 28, 2015

January 28, 2015

Posted by **Marian** on Monday, February 7, 2011 at 11:52am.

Solve the following pair of simultaneous linear equations.

3x + 4y =5

2x + 2y =2

Select the option corresponds to the solution.

Select one:

x = 9 / 7, y = 2 / 7 x = − 1, y = 2 x = 9 / 7, y = − 2 / 7 x = 2, y = − 1 x = − 2 / 7, y = 9 / 7

- maths -
**drwls**, Monday, February 7, 2011 at 11:58amYou could either solve the problem directly or try each of the x,y combinations to see which one satisfies the two equations.

Note that

3x + 4y = 5

and

4x + 4y = 4

Thus

x = -1

There is only one choice with x = -1.

- maths -
**Marian**, Monday, February 7, 2011 at 12:02pmThanks I understand now!

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