Question

Praw Pace
4 Toby is making a pattern trom grey and white squares.
This is what he has drawn so far
Make four copies of the diagram.
a Start with three of your copies of the diagram.
In each one, shade three more squares so that the pattern has rotational
symmetry of order 2,
Each pattern must be different
b In your fourth copy of the diagram, shade three more squares so that the
pattern
has rotational symmetry of order 4​

Answer 1

Step-by-step explanation:

Draw graph of x - 2y = 4 , 2x - 4y = 12 on the same co - ordinate plane. Observe it,. Think of the relation between the coefficients of x , coefficients

Answer 2

\sum\limits_{i=1}^n x_i = x_1 + x_2 + \dots + x_n

i = index of summation

n = upper limit of summation