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They do unless they're perfectly vertical.

If the equation of a line is [ x = a number ], then it has no y-intercept.

If 'y' appears in the equation at all, then the line has a y-intercept.

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12y ago

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No. One easy example is a horizonal line like y=4. This line never crosses the x-axis, therefore it does not have an x-intercept.

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16y ago
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Q: Do all lines have a y-intercept?
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