Pre-Algebra Examples

Find the Slope and y-intercept 3x-y=9
Step 1
Rewrite in slope-intercept form.
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Step 1.1
The slope-intercept form is , where is the slope and is the y-intercept.
Step 1.2
Subtract from both sides of the equation.
Step 1.3
Divide each term in by and simplify.
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Step 1.3.1
Divide each term in by .
Step 1.3.2
Simplify the left side.
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Step 1.3.2.1
Dividing two negative values results in a positive value.
Step 1.3.2.2
Divide by .
Step 1.3.3
Simplify the right side.
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Step 1.3.3.1
Simplify each term.
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Step 1.3.3.1.1
Divide by .
Step 1.3.3.1.2
Move the negative one from the denominator of .
Step 1.3.3.1.3
Rewrite as .
Step 1.3.3.1.4
Multiply by .
Step 1.4
Reorder and .
Step 2
Use the slope-intercept form to find the slope and y-intercept.
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Step 2.1
Find the values of and using the form .
Step 2.2
The slope of the line is the value of , and the y-intercept is the value of .
Slope:
y-intercept:
Slope:
y-intercept:
Step 3