1.2 The Method of Substitution. Intersection of Lines Yesterday we talked about solving when two lines intersect… – How did we do that? – Are they equal.

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Presentation transcript:

1.2 The Method of Substitution

Intersection of Lines Yesterday we talked about solving when two lines intersect… – How did we do that? – Are they equal to each other there?

Intersection of Lines Today we are going to find out a new way of finding when two lines are equal.

Can I solve this?

How about that?

Planes again…

Substitution The Process Step 1: Isolate one variable (whichever is easier) Step 2: Plug whatever variable you isolated into the other equation Step 3: Substitute back into one of original eq n to find missing info Step 4: Check your answer

Substitution

Questions Pg 26 #’s 1-6,8,15