Step by step
The question
Question: is (3, 1) a solution of y < x − 1.
y < x − 1
is (3, 1) a solution?
1 Read x and y
The first number is always x.
The second is y.
So x = 3 and y = 1.
(3, 1) → x = 3, y = 1
Careful!
Do not swap them.
The first number in (3, 1) is x.
Careful: not x = 1, y = 3 ✗
2 Put them in
Put x = 3 and y = 1 in.
1 <? 3 − 1
Work out each side.
Is 1 less than 2?
Yes.
True!
1 < 2 true
It is true.
So (3, 1) is a solution.
(3, 1) is a solution
Let's look back.
First: read x and y.
Last: put them in.
Answer
(3, 1) is a solution