**1. Are two points collinear?**

Yes, they must be. You can always draw a line between two points.

**2. How do you find the reciprocal of a decimal?**

If it is an "easy" number such as 2, do it in your head.

i.e. Reciprocal of 2 is 1 ÷ 2 = 0.5

If it is a more difficult number such as 3.75 use the button on your calculator.

i.e.

0.2666666which rounds to 0.27 (to 2 sig,fig.)

**3. How do you find the reciprocal of a fraction?**

Turn it "upside down". If it is a mixed number, change it to an improper fraction first.