1. Chapter 8 by david

2. Most of this chapter is very commonly used in the real world .

3. vocabulary

4. Ratios
A ratio is a comparison of two numbers or sizes . Ratios are used to compare two things

5. Rates
A rate is a line that goes up and down due to outside influences and how it acts on a product or thing.

6. Slope
a slope is a incline or a decline from one point to another point . The slope is a line that connects the two points of a angle .

7. Proportions
A proportion is a fraction that is doubled from a simplified fraction

8. Cross products
A cross product is when two fractions cross from numerator and denominator and denominator and numerator cross

9. Scale drawings
A scale drawing is picture of a object that is much smaller than it actually is. This is often used when people are building a big thing

10. Real world factors
Almost all lessons are used in the world to day. Every where you look there is one of these