Algebra 1, 2008

 PAGE: 256 SET: Exercises PROBLEM: 5

Write the each equation in slope-intercept form y = mx + b.

-----------------------> (Equation 1)

-----------------------> (Equation 2)

Graph the equations and find the intersection point.

The graphs appear to intersect at (0, –4).

Check:

To check the solution by substituting the coordinates in each equation.

Substitute (0, –4) in equation 1.

(Apply zero product property: )

(Apply additive identity property: 0 – 4 = 4)

The statement is true.

Substitute (0, –4) in equation 2.

(Apply zero product property: )

(Apply additive identity property: 0 – 4 = 4)

The statement is true.

The solution of the system is (0, –4).

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