Dr. J's Maths.
Where the techniques of Maths
are explained in simple terms.

Algebra - Simultaneous equations - Easy coefficients.
Test Yourself 2.


<> 

Simultaneous equations using equations with 1 in front of one of the variables:

1. y = 2x + 7

y = 4x + 13

 

2. 2a - b = 6

a + 3b = 10

3. 2x + y = -2

4x - 3y = 31

4. 5p - 2q = 8

2p - q = 5

 

5. y = x + 1

6. 3m - 2n = 10

5m + n = 8

Simultaneous equations having equal coefficients for one variable:

7. 2x + y = 1

2x + 3y = -9

 

8. 4a - 3b = 11

4a + 2b = 10

9. 5e - 3f = 20

2e + 3f = 15

10. 5p - q = 13

2p - q = 7

 

11. 11a + 9b = 34

5a - 9b = -50

12. 3y - 4x - 1 = 0

2y + 4x - 14 = 0

 

Criterion:

If you attained at least 4 correct in each set and 9 overall, you have made a good start. Re-read the solutions and review at least parts of the video again. Then re-do this test.

If you attained, 10 or 11 correct, you have established a good basis for this topic. It is highly possible your technique for simultaneous equations is sound but that you have made a mistake with your signs when solving equations. Review your work to see if this is the case. Be careful - signs in equations will always be a problem. Talk to yourself about what you should be doing at each step so as to keep your concentration high and to ensure you take the right action.

 

If you attained 12 out of 12 - press here.GREAT WORK!!
You should now have lots of confidence on this part of the topic.