Pre-Algebra Examples

Graph 115=240-15x
Step 1
Solve for .
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Step 1.1
Since is on the right side of the equation, switch the sides so it is on the left side of the equation.
Step 1.2
Move all terms not containing to the right side of the equation.
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Step 1.2.1
Subtract from both sides of the equation.
Step 1.2.2
Subtract from .
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
Cancel the common factor of .
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Step 1.3.2.1.1
Cancel the common factor.
Step 1.3.2.1.2
Divide by .
Step 1.3.3
Simplify the right side.
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Step 1.3.3.1
Cancel the common factor of and .
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Step 1.3.3.1.1
Factor out of .
Step 1.3.3.1.2
Cancel the common factors.
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Step 1.3.3.1.2.1
Factor out of .
Step 1.3.3.1.2.2
Cancel the common factor.
Step 1.3.3.1.2.3
Rewrite the expression.
Step 2
Since is a vertical line, there is no y-intercept and the slope is undefined.
Slope: Undefined
y-intercept: No y-intercept
Step 3
Find two points on the line.
Step 4
Graph the line using the slope, y-intercept, and two points.
Slope: Undefined
y-intercept: No y-intercept
Step 5