Using a Calculator to Solve an Equation

Calculator Function: Finding an Intersection of Two Curves

To find the coordinates of the intersection(s) of two curves:

• Press 2nd and TRACE (CALC)• Select 5:interesect• When each direction is satisfied, hit

ENTER

Calculator & Solving Equations

Method 1:

Enter –

Calculator Function –

2 2Solve: 2 5 3 4 3x x x x

21

22

2 5 3

4 3y x

y x

x

x

CALC: intersect

Intersection

x-coordinates!

3,0

2,16

3x 2x OR

Left Side

Right Side

You are trying to

solve for x, so we can

ignore the y-values.

There are two intersections, so there are

two solutions.