CPM Homework Help : AC Problem 12-107

Find the point of intersection of the two functions below using any method. Describe how you found your solution.

$y=2x+9$
$y=x^2-2x-3$

Step 1:

Set the two equations equal to each other using the Equal Values Method.
Then solve for $x$ .

Step 2:

Substitute both values of $x$ into either equation and solve for $y$ .