Problem:
Algebra-Graphing (InterMath)

Take any equation and graph both sides of the equation. For example, if you are trying to solve the equation

3x-4 = 11,

graph the two equations

y= 3x-4


y= 11

How can you identify the solution to the equation on the graph?

 

Solution:

I chose the two equations
y= 2x + 6
y= 24

If solving algebraically you would set the two equations equal to each other and solve for x.

That would be your x value for the point of intersection.

When solving graphically, you would plot the two equations onto the graph

 

Click HERE to see a Graphing Calculator file for this problem

Once you have done that, you then find the coordinates of the point where they intersect.

The x value of the point of intersection is your solution to the equation.

x= 9

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