Chapter Exercise 10

Q1

• A
• B
• C
• D

If a = b² − 8b + 15 = 2b − 6, then a =

• A. 0 or 8.
• B. 3 or 7.
• C. −12 or −20.
• D. −3 or −7.

Find the number of intersections of the curve y = −(x − 3)² + 2 and the straight line 5x − y − 1 = 0.

• A. 0
• B. 1
• C. 2
• D. 3

Q4

• A
• B
• C
• D

Q5

• A
• B
• C
• D

Q6

• A
• B
• C
• D

Q7

• A
• B
• C
• D

Q8

• A
• B
• C
• D

Q9

• A
• B
• C
• D

For 0° ≤ θ < 360°, how many roots does the equation 5sinθ = −2cos²θ have?

• A. 1
• B. 2
• C. 3
• D. 4