CPM Homework Help : CCA2 Problem 3-119

Graph the two functions below and find all points where they intersect. List all points in the form $(x,y)$ .

$f(x)=x^2−3x−10$

$g(x)=-5x-7$

Hint:

To ensure that your points of intersections are correct, set these two equations equal to each other, and solve for $x$ .

More Help:

Solve for the $y$ -coordinates with these $x$ -values, and record the points of intersection.

Steps:

$x^2−3x−10=−5x−7$
$x^2+2x−3=0$
$(x+3)(x−1)=0$
$x=−3$ or $x=1$

Use the eTool below to graph the two functions and find all points of intersections.
Click the link at right to view full version of the eTool: CCA2 3-119 HW eTool