1. SLOPE

2. GRAPH
a diagram showing the relation between variable quantities

3. X - INTERCEPT
The point where a line crosses the x-axis

4. Y - INTERCEPT
The point where a line crosses the y-axis

5. SLOPE
The ratio of vertical change to horizontal change between 2 points on a line

6. VERTICAL CHANGE
At right angles to a horizontal plane; in a direction such that the top is directly above the bottom

7. HORIZONTAL CHANGE
Parallel to the plane of the horizon; at right angles to the vertical

8. PROPORTIONAL RELATIONSHIP
+14 means NOT proportional; Line does not go thru zero
4 x 4 = 16
7 x 4 is NOT = 22 NOT proportional
Comparison of two equal ratios

9. CONSTANT OF PROPORTIONALITY
 If a quantity x is proportional (directly) to another quantity y, then x is written as Y = kX, where k is called the Constant of Proportionality

10. SIMILAR TRIANGLES
Triangles are similar if they have the same shape, but can be different sizes 
𝟏𝟐 𝟏𝟖 = 𝟔 𝟗 = 𝟐 𝟑

11. SLOPE FORMULA
After “counting” slope many times, mathematicians discovered the “shortcut” or formula

12. LINEAR EQUATION
Sometimes, slope can be found in an equation, a mathematical sentence that says two things are EQUAL. We called this k (constant of proportionality). Now, we call it m (slope).

13. TABLE
We can also find slope from a TABLE, a set of numbers (points) systematically displayed, especially in columns

14. UNIT RATE
Comparison of two different quantities when they are combined together; also called rate of change = slope

15. SPEED
The rate at which someone or something is able to move; rate of change = slope

16. TYPES OF SLOPE
Y = 2X + 2
Y = -2X + 2
Y = 5
X = 5