Algebra I in Simple English/Lines(Linear Functions)/Find the Equation of the Line Using Two Points

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Contents 1 Vocabulary 2 Lesson 3 Example Problems 4 Practice Games 5 Practice Problems

[edit] Vocabulary

[edit] Lesson

You can find the y intercept(b) of a line by using "point slope" with a pair of cordinates.

-Find the slope (y < sub > 2 < / sub > − y < sub > 1 < / sub > / x < sub > 2 < / sub > − x < sub > 1 < / sub > - -Use one of the cordinates (points) and use this formula: y − y < sub > 1 < / sub > = m(x − x < sub > 1 < / sub > ) -Then you end up with y = mx + b

[edit] Example Problems

FIND THE Y INTERCEPT OF THE FOLLOWING CORDINATES

5,2 3,6

7,6 5,9

8,9 5,2

[edit] Practice Games

[edit] Practice Problems