If we were talking about a horizontal line, then we'd say y doesn't change. So if x doesn't change, that means that x is just going to be equal to some constant value.

When two points have the same y-value, it means they lie on a horizontal line. The slope of such a line is 0, and you will also find this by using the slope formula.

Practice your knowledge of horizontal and vertical lines: their graphical presentation, their slopes, and their equations.

Use the power of algebra to understand and interpret points and lines (something we typically do in geometry). Topics you'll explore include the slope and the equation of a line.

You assessment is correct. A horizontal line has inputs of all real numbers and its output is always the same number. It is a function because each input creates only one output. The rule for functions …

Khan Academy ... Khan Academy

Practice Relating linear contexts to graph features Get 5 of 7 questions to level up!

This topic covers: - Intercepts of linear equations/functions - Slope of linear equations/functions - Slope-intercept, point-slope, & standard forms - Graphing linear equations/functions - Writing linear …

Practice Up next for you: Linear equations word problems Get 3 of 4 questions to level up!

If the linear equation is of the form: X = a number, then it is a vertical line and it has an x-intercept, but no y-intercept. If the linear equation is of the form: Y = a number, then it is a horizontal line and it has …