a(b + c) = ab + ac, for a, b, c ∈ R
The equivalence class of a is [a].
The set S is defined to be {1, 2, 4}.
The movie tickets cost $4.50.
1
=1
2
2
1
2
=1
2
1
2
2
y = |x|
1
2
Tables:
x
f (x)
1
2
2
4
3
6
4
8
5
10
x
0
f (x)
√
2
1
1
2
4
3
9
4
16
Table 1: These values represent the function f (x).
Arrays:
x + 2y = 5
(1)
3x + 4y = 8
(2)
(1)*2-(2)
2x + 4y = 10
3x + 4y = 8
−x = 2
x = −2