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# How do you tell if a slope is zero or undifined?

Updated: 4/28/2022

Wiki User

11y ago

A zero slope is horizontal or flat, and an undefined slope is vertical or straight up and down.

While this answer is in the textbook and notebook of anyone studying the subject, it is easy to get the two mixed up on test day. Try the following mnemonic (memory aid):

Look at the letters "z" for zero, and "u" for undefined. The top and bottom of the letter Z are horizontal lines. The two sides of the letter U are vertical lines.

Wiki User

11y ago

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Q: How do you tell if a slope is zero or undifined?
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### How can you tell if a slope is zero or undefined?

A slope is 0 if it is a straight horizontal line. A slope is undefined if it is a straight vertical line.

### Does a horizontal line has a slope of zero?

Yes, it is true; slope zero is no slope.

### What is the difference between undefined slope and zero slope?

A line with an undefined slope is a vertical line. A line with a slope of zero is a horizontal line. If you use the formula for slope m = (y2-y1) divided by (x2-x1)... For an undefined slope you will get zero in the denominator, which you cannot have because you cannot divide by zero. For a slope equal to zero, you will get a zero in the numerator. Zero divided by any non-zero denominator, will give you a slope of zero.

### What is the slope when you get a zero on top?

The slope when you get a zero on top would be zero. Zero divided by any number is zero.

### What is the four different types of slopes?

positive slope negative slope undefined slope zero slope

### Lines always have a slope of zero.?

Horizontal lines always have a slope of zero. (i.e completely flat, level surfaces have a slope of zero). However a line does not have to have a slope of zero in order to be a line.

### What is the difference between a line with a slope of zero and no slope?

A line with slope of zero is horizontal. A line with no slope is vertical because slope is undefined on a vertical line.

### Is zero over zero one or undifined because a number over itself is alwas one but a number over zero is always zero?

0/0 is undefined because you cannot divide any number into 0 parts.

### What is flat slope?

Flat slope is slope equals zero.

### Some lines have no slope?

A horizontal line has a slope of zero. For a vertical line, the slope is not defined (change of y / change of x would result in a division by zero).A horizontal line has a slope of zero. For a vertical line, the slope is not defined (change of y / change of x would result in a division by zero).A horizontal line has a slope of zero. For a vertical line, the slope is not defined (change of y / change of x would result in a division by zero).A horizontal line has a slope of zero. For a vertical line, the slope is not defined (change of y / change of x would result in a division by zero).

### What is the direction of a line with a slope of zero?

A line with a slope of zero is a flat, vertical line.

### A vertical line has a run which is?

run as in slope of a line is zero . horizontal lines have no slope and vertical lines have a slope of zero