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Home > A2C > Chapter 1 > Lesson 1.1.4 > Problem 1-47

1-47.

Use any method to find the point of intersection of and  .).

Method 1: Solve the system of equations algebraically.




Set equations equal to each other and solve for .



Calculate to find the corresponding -coordinate.

Method 2: Make a table.

Make a table for each function and compare values. Then check your answer in both equations.

Point of intersection 

Method 3: Graphing

2 lines intersecting at (2, comma 1), decreasing line labeled, g of x = negative 4, x, + 9, increasing line labeled, f of x, = 3, x, minus 5.

Use the blank graph in the eTool below to find the point of intersection.
Click the link at right for the full version of the eTool: CCA2 1-46 HW eTool