# Worksheet: Cramer’s Rule

In this worksheet, we will practice using Cramer’s rule to solve a system of linear equations.

**Q2: **

Jacob is solving simultaneous equations using Cramer’s rule. He writes down

What does he write down for ?

- A
- B
- C
- D
- E

**Q4: **

Use determinants to solve the system

- A
- B
- C
- D
- E

**Q5: **

Use determinants to solve the system

- A,
- B,
- C,
- D,
- E,

**Q6: **

Use determinants to solve the system

- A,
- B,
- C,
- D,
- E,

**Q7: **

Use determinants to solve the system

- A,
- B,
- C,
- D,
- E,

**Q8: **

Use determinants to solve the system

- A, ,
- B, ,
- C, ,
- D, ,
- E, ,

**Q9: **

Solve the simultaneous equations

- A, ,
- B, ,
- C, ,
- D, ,
- E, ,

**Q10: **

11 sketchbooks and 15 crayons cost 377 LE, and 15 sketchbooks and 16 crayons cost 474 LE. Use Cramer’s rule to find the price of a sketchbook and the price of a crayon.

- AA sketchbook costs 9 LE and a crayon costs 2.70 LE.
- BA sketchbook costs 22 LE and a crayon costs 9 LE.
- CA sketchbook costs 441 LE and a crayon costs 9 LE.
- DA sketchbook costs 22 LE and a crayon costs 1,078 LE.
- EA sketchbook costs 441 LE and a crayon costs 1,078 LE.

**Q11: **

Use Cramer’s rule to solve the simultaneous equations

- A, ,
- B, ,
- C, ,
- D, ,
- E, ,

**Q12: **

Use determinants to solve the system

- A, ,
- B, ,
- C, ,
- D, ,

**Q15: **

Use determinants to solve the system

- A,
- B,
- C,
- D,
- E,

**Q16: **

Use determinants to solve the system

- A,
- B,
- C,
- D,
- E,