The modulus function

The modulus function Quiz

Spec B7 · AQA A-Level Maths: Quiz

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5 questions, one answer each

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1. What is the vertex of $y=|3x+12|$ ?
- A. $(4,0)$
- B. $(-4,0)$
- C. $(0,12)$
- D. $(-12,0)$
2. What is the $y$ -intercept of $y=|x-7|$ ?
- A. $-7$
- B. $0$
- C. $7$
- D. $1$
3. How many solutions does $|2x-1|=-3$ have?
- A. Two
- B. One
- C. Three
- D. None
4. The line $y=5$ meets $y=|x-2|$ at two points. What is the distance between them?
- A. $10$
- B. $5$
- C. $7$
- D. $3$
5. What is the magnitude of the gradient of each branch of $y=|ax+b|$ ?
- A. $|a|$
- B. $b$
- C. $a+b$
- D. $0$