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Home > A2C > Chapter 4 > Lesson 4.2.4 > Problem 4-123


Consider the system of equations at right:   

  1. What is the parent of each equation?

    Both equations are equations of lines.

  2. Solve this system algebraically.

    Multiply the first equation by , then use elimination.
    Now substitute the value found for  into the equation and solve for .

  3. Find where the two graphs intersect.

    The graphs intersect at the solution to both equations.

  4. Explain the relationship between parts (b) and (c) above.

    See part (c).