Ordered Pairs: The order of numbers plotted on a graph in x,y order. example: (3,5) The 3 is the x and the 5 is the y.

y2-y1/ x2-x1 is the way to find the slope. Using ordered pairs.

Y-intercept and rise/run

Y-intercept: The value where a straight line crosses the Y axis of a graph. (the b of y=km+b)

Slope is defined as the ratio of the "rise" over "run" between two points on a line.

Finding slope...

Identifying Slope

**Slope**

**By:Keshari, Sara, Ziliya**

Examples:

1.

2.

Origin

Origin- The point where the x-axis and the y-axis intersect.

(Also known as 0,0)

Linear Line

Linear Line- A straight Line

Proportional Slope and Direct Variation

Proportional Slope or Direct Variation- When who quantities always have the same size in relation to each other.

When graphed, always goes through the origin and always linear.

Non-Proportional Slope

Videos

Does not go through the origin. Can be linear.

Doesn't go through the origin

Rise over Run Examples

Rate Of change

rate of change is a rate that describes how one quantity changes in relation to another quantity.

(Also can be known as Slope)

Rate of change- 40 miles per hour.

)

)

)

)

)

)

)

3

2

1

4 3 2 1

Rise

Run

3

----

4

This table is non proportional because starts out with 6

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