Find the valuesLet y = x + 3(i) If x = 0, find y.(ii) If y = 0, find x

1.	Find the valuesLet y = x + 3(i) If x = 0, find y.(ii) If y = 0, find x.(iii) If x = -2, find y.(iv) If y = -3, find x.Let 2x + y - 6 = 0(i) If x = 0, find y.(ii) If y = 0, find x.(iii) If x = -2, find y.(iv) If y = -3, find x.
Answer» Let y = x + 3 (i) if x = 0 y = 0 + 3 = 3 ∴ y = 3 (ii) y = 0 0 = x + 3 ∴ x = – 3 (iii) x = – 2 y = – 2 + 3 ∴ y = 1 (iv) y = -3 -3 = x + 3 ∴ x = -6 Let 2x + 7 – 6 = 0 (i) x = 0 2 x 0 + y – 6 = 0 ∴ 7 = 6 (ii) y = 0 2x + 0 – 6 = 0 2x = 6 x = 3 (iii) x = – 2 2 x (- 2) + y – 6 = 0 y – 10 = 0 y = 10 (iv) y = -3 2x – 3 – 6 = 0 2x = 9 x = 9/2

Find the valuesLet y = x + 3(i) If x = 0, find y.(ii) If y = 0, find x.(iii) If x = -2, find y.(iv) If y = -3, find x.Let 2x + y - 6 = 0(i) If x = 0, find y.(ii) If y = 0, find x.(iii) If x = -2, find y.(iv) If y = -3, find x.

Answer»

Let y = x + 3

(i) if x = 0

y = 0 + 3 = 3

∴ y = 3

(ii) y = 0

0 = x + 3

∴ x = – 3

(iii) x = – 2

y = – 2 + 3

∴ y = 1

(iv) y = -3

-3 = x + 3

∴ x = -6

Let 2x + 7 – 6 = 0

(i) x = 0

2 x 0 + y – 6 = 0

∴ 7 = 6

(ii) y = 0

2x + 0 – 6 = 0

2x = 6

x = 3

(iii) x = – 2

2 x (- 2) + y – 6 = 0

y – 10 = 0

y = 10

(iv) y = -3

2x – 3 – 6 = 0

2x = 9

x = 9/2