California Algebra 1, 2007
 SELECT PAGE NO. SELECT PROBLEM NO. FOR THE PAGE

 PAGE: 229 SET: Exercises PROBLEM: 4

The equation is .

First find the y-intercept.

The y-intercept is the value of y, when x = 0.

(Substitute x = 0 in original equation)

(Zero product property: )

(Multiply each side by negative one)

(Product of two same signs is positive)

The y-intercept is .

The co-ordinate point is

Next find the x-intercept.

The x-intercept is the value of x, when y = 0.

(Substitute y = 0 in original equation)

(Divide each side by 5)

(Cancel common terms)

(Divide: )

The x-intercept is 7

The co-ordinate point is

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 x-intercept is 7 and y-intercept is .

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