1. Determine if each of the following is a linear equation in two variables.
(a) 7a - 26 = 0
(b) 4bc + 2 = 0
(c) d = 5e? + 10
(d) 7 + 4f- 9g
1
(e)
r+ 3
4
(f) 2p = 4q - 31
=
2y - 1
(g) 3r - 6s - 8 = 0
(h) 3u +1 = 2t - 6
1
= 11พ
2
2
8
(1) 7y -
6)
+
-
2. Write a linear equation in two variables for each of the following.
(a) The difference in age between Dej and his youngest sister is 11
years.
(b) The price of a pair of trousers is three times the price of a pair
of shorts.
(c) The total score of two students in a bowling competition is 781.
