Page 42 - Steady Mate Tg1 - Book B

Matematik Tingkatan 1 Bab 6 Persamaan Linear

H Tandakan ✓ bagi penyelesaian yang mungkin bagi setiap persamaan yang berikut dan ✗ jika bukan. TP 3 ARAS R
Mark ✓ for the possible solutions for each of the following equations and ✗ if otherwise.

Persamaan linear Pasangan penyelesaian
Linear equation Pairs of solutions

Contoh x = 2, y = 1 ✓ x = 1, y = 2 ✗ x = –1, y = 3 ✓
2(–1) + 3(3)
2x + 3y = 7 2(2) + 3(1) 2(1) + 3(2)
= 4 + 3 = 2 + 6 = –2 + 9
= 7
= 7 = 8 ≠ 7

1. 2x + 5y = –9
x = –2, y = –1 ✓ x = –7, y = 1 ✓ x = 1, y = –2 ✗
2(–2) + 5(–1) 2(–7) + 5(1) 2(1) + 5(–2)
= – 4 – 5 = –14 + 5 = 2 – 10
= – 9 = –9 = –8 ≠ –9

2. x – 4y = 8
x = 3, y = –2 ✗ x = 2, y = 3 ✗ x = 4, y = –1 ✓
3 – 4(–2) 2 – 4(3) 4 – 4(–1)
= 3 + 8 = 2 – 12 = 4 + 4
= 11 ≠ 8 = –10 ≠ 8 = 8

I Lengkapkan jadual bagi nilai-nilai x yang diberikan. Seterusnya, lukis graf untuk mewakili setiap persamaan linear
yang berikut. TP 3 ARAS S
Complete the table for the given values of x. Then, draw a graph to represent each of the following linear equations.
Contoh 1. x + 2y = 11

x – 2y = –9 x –7 –5 –3 –1 1
x 1 3 5 7 9 y 9 8 7 6 5
y 5 6 7 8 9 (x, y) (–7, 9) (–5, 8) (–3, 7) (–1, 6) (1, 5)
(x, y) (1, 5) (3, 6) (5, 7) (7, 8) (9, 9)

y y

9 9
8 8
7 7
6 6
5 5
4 4

3 3
2 2
1 1
0 x x
1 2 3 4 5 6 7 8 9 –7 –6 –5 –4 –3 –2 –1 0 1

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