PAGE: 164 SET: Exercises PROBLEM: 1

The equation is .

Solve by algebraically.

Apply subtraction property of equality: Subtract 6 from each side.

(Simplify)

Apply division property of equality: Divide each side by negative 2.

(Divide: )

The solution is 3.

Solve by graphing.

The equation is .

The related function is .

To graph the function make a table

Draw a table

 x f(x) = 2x +6 f(x) (x, f(x)) 1 4 (1, 4) 2 2 (2, 2)

Use these ordered pairs to graph the equation.

1.  Draw a coordinate plane.

2.  Plot the points.

3.      Draw a line through these points.

The graph intersects the x-axis at 3, hence the solution is 3.

The solution of the equation is 3.

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