key term - Zero Slope

Definition

The zero slope of a line refers to a line that is perfectly horizontal, meaning it has no incline or decline. A line with a zero slope is parallel to the x-axis and indicates that the y-values do not change as the x-values increase or decrease.

5 Must Know Facts For Your Next Test

1. A line with a zero slope is a horizontal line that is parallel to the x-axis.
2. The equation of a line with a zero slope is in the form $y = b$, where $b$ is the y-intercept.
3. When the slope of a line is zero, it indicates that the y-values do not change as the x-values increase or decrease.
4. A zero slope line has no incline or decline, meaning the line is perfectly flat and does not rise or fall.
5. The slope formula for a line with a zero slope is $m = \frac{y_2 - y_1}{x_2 - x_1} = 0$, as the change in y-values is always zero.

Review Questions

• Explain the relationship between a zero slope and the equation of a line.
  • A line with a zero slope has an equation in the form $y = b$, where $b$ is the y-intercept. This means that the y-values remain constant regardless of the x-values, as the slope of the line is zero. The zero slope indicates that the line is perfectly horizontal and parallel to the x-axis, with no change in the y-values as the x-values increase or decrease.
• Describe how the slope formula can be used to identify a line with a zero slope.
  • The slope formula for a line is $m = \frac{y_2 - y_1}{x_2 - x_1}$. When the slope of a line is zero, this means that the change in y-values ($y_2 - y_1$) is always zero, regardless of the change in x-values ($x_2 - x_1$). Therefore, the slope formula for a line with a zero slope simplifies to $m = 0$, indicating that the line is perfectly horizontal and has no incline or decline.
• Analyze the characteristics of a constant function in the context of a line with a zero slope.
  • A constant function is a function where the output value (y-value) remains the same regardless of the input value (x-value). This is directly related to a line with a zero slope, as the y-values do not change as the x-values increase or decrease. The equation of a line with a zero slope is in the form $y = b$, where $b$ is the constant y-value. This means that the line is perfectly horizontal, and the function is considered a constant function, as the output (y-value) is constant for any given input (x-value).

Related terms

Slope:

The slope of a line represents the rate of change or steepness of the line, indicating how much the y-value changes for a given change in the x-value.

Horizontal Line: A horizontal line is a line that is parallel to the x-axis and has a constant y-value, meaning the y-value does not change as the x-value changes.

Constant Function: A constant function is a function where the output value (y-value) remains the same regardless of the input value (x-value).