Page 18 - ACE YR IGCSE A TOP APPR' TO ADD MATH

7. Solve the simultaneous equations. Write your answer in exact form.
3x + 5y = 8
2y 3x
– = 6
x y

Penerbitan Pelangi Sdn Bhd. All Rights Reserved.

[6]

8. Find the value of s for which the line y + 4 = sx is a tangent to the curve y = 1 − x and find
the x-coordinate of the point at which this tangent touches the curve. 3x

[7]

9. The quadratic equation 3ax + 2ax + a = 4 − x has two distinct roots. Find the range of values
2
2
of a.

[5]

10. Solve the quadratic equation x(2x − 5) = 2x + 1. Give your answer correct to 3 decimal places.

[3]

Chapter 2 Quadratic Functions 15

Chapter 2 Add Math (13 to 21).indd 15 14/03/2022 12:16 PM