How about "is always zero"?
A straight line passes through the x-axis one time, if its slope is non-zero, or not at all, if its slope is zero.
The slope is zero.
A line with slope of zero is horizontal. A line with no slope is vertical because slope is undefined on a vertical line.
The graph of [ y = 7 ] is a straight horizontal line, passing through the point [ y = 7 ]on the y-axis. The slope of a horizontal line is zero.
I and A!
How about "is always zero"?
The slope of a line is the tangent of the angle made by the line with the X-axis. Since for a horizontal line, this angle is 0 and tan(0) = zero, the slope of a horizontal line is zero.
The slope of a line is the tangent of the angle made by the line with the X-axis. Since for a horizontal line, this angle is 0 and tan(0) = zero, the slope of a horizontal line is zero.
sometimes zero
The letter 'O' with a slash through it is the number zero.
A straight line passes through the x-axis one time, if its slope is non-zero, or not at all, if its slope is zero.
The line going through an "o" helps to clarify the letter o, from the number zero.
The symbol is a zero with a diagonal line through it.
Greenwich, England
The equator is the line made up of every point on Earth at zero latitude.
zero