They do not HAVE to be, but the convention is to have them written horizontally. That makes it a little more universal.
Horizontal : y = 0Vertical: x = -2.
Horizontal : y = 0Vertical: x = 2.
The kind of function without an X variable.Y = 4is a horizontal line.
A vertical line has the equation [ x = a number ]. A horizontal line has the equation [ y = a number ].
It is the gradient: the change in the vertical direction divided by the change in the horizontal direction.
For vertical lines, when you try to figure out the slope, you get zero in the denominator - in other words, a division by zero.
Linear equations with one variable will either be horizontal or vertical lines. y=2 is a horizontal line going through (0,2)
The graph would be a horizontal line crossing the y axis at "2". This means that x can be any number.
I. M. Idriss has written: 'Response of horizontal soil layers during earthquakes' -- subject(s): Earthquakes, Partial Differential equations, Soil mechanics
Algebraic equations, trigenometric equations, linear equations, geometric equations, partial differential equations, differential equations, integrals to name a few.
The answer will depend on what kinds of equations: there are linear equations, polynomials of various orders, algebraic equations, trigonometric equations, exponential ones and logarithmic ones. There are single equations, systems of linear equations, systems of linear and non-linear equations. There are also differential equations which are classified by order and by degree. There are also partial differential equations.
A horizontal line.A horizontal line.A horizontal line.A horizontal line.