1.2 the method of substitution. intersection of lines yesterday we talked about solving when two...
Post on 13-Dec-2015
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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…
• Yesterday we had a question that involved Mr. Richards renting or owning a plane. The 2 equations we came up with were:
Owning =>
Renting =>
Substitution
• The ProcessStep 1: Isolate one variable (whichever is easier)Step 2: Plug whatever variable you isolated into the other equationStep 3: Substitute back into one of original eqn to find missing infoStep 4: Check your answer
Substitution
• Find when the 2 lines are equal (point of intersection):
Questions
• Pg 26 #’s 1-6,8,15
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