Finding the X Coordinate of Intersection of Two Equations by Graphing

This video tutorial teaches how to find the X coordinate of the intersection of two equations by graphing them. It reviews the concept of solutions to equations and systems of equations, emphasizing the importance of the intersection point. The lesson also covers the slope-intercept form, highlighting common misunderstandings. A real-world example involving cell phone plans is used to illustrate the application of these concepts, showing how to determine when two plans cost the same by graphing their respective equations.

What is the significance of the point where two lines intersect on a graph?

• It shows the maximum value of the equations.

• It indicates the starting point of the graph.

• It is the solution to both equations.

• It represents the midpoint of the lines.

In the slope-intercept form of a linear equation, what does the 'M' represent?

• The initial value of Y

• The rate of change or slope

• The X-intercept

• The total number of solutions

What common mistake do students make when identifying the slope and Y-intercept in real-world problems?

• Using the Y-intercept as the slope

• Confusing the X and Y coordinates

• Using the slope as the Y-intercept

• Ignoring the initial value

For the Textaway cell phone company, what is the correct slope in the equation?

• $30 per month

• $0.20 per text

• $20 per month

• $0.40 per text

At what number of texts will the bills from both cell phone companies be equal?

• 30 texts

• 40 texts

• 50 texts

• 60 texts