Subtract from both sides of the equation.

Since is a vertical line, there is no y-intercept and the slope is undefined.

Slope: Undefined

y-intercept: No y-intercept

Graph x+9=0

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# Graph x+9=0

Subtract from both sides of the equation.

Since is a vertical line, there is no y-intercept and the slope is undefined.

Slope: Undefined

y-intercept: No y-intercept

Graph x+9=0