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| PAGE: 77 | SET: Exercises | PROBLEM: 1 |
The equation is 
The equation is in slope-intercept form.
To graph the equation, first graph the 
.
(Subtract x from each side)
(Commutative property: 
)
(Additive inverse property: 
)
(Additive identity property: 
)
(Divide each side by 3)
(Cancel common terms)
(Multiply each side by negative one)
(Product of two same signs is positive)
First find the y-intercept.
The y-intercept is the value of y, when 
.
(Substitute 
)
(Additive identity property: 
)
(Divide: 
)
Next find the x-intercept
The co-ordinate point is 
The x-intercept is the value of x, when 
.
(Substitute 
)
(Multiply each side by 3)
(Cancel common terms)
(Zero product property: 
)
(Add 9 to each side)
(Commutative property: 
)
(Additive inverse property: 
)
(Additive identity property: 
)
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.
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