PRACTISING 5. Evaluate f(4) for each of the following.
a) f= {(1,5), (3, 2), (4, 1), (6,2)} d)
b)
х 2
61
4
6
8
y = f(x)
- f(x)
4
8
12
16
-4
2
O
2
2
4 6
c) f(x) = 3x2 – 2x + 1
-4
-6-
-8

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte