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Gradient
The steepness of a line
Intercept
Where two lines cross. The y-intercept: where the line meets the y-axis.
Parallel
Two lines that never meet with the same gradient.
Coordinate
A set of values that show an exact position on a graph.
Linear
Linear graphs (straight line) - linear common difference by addition/ subtraction
Asymptote
A straight line that a graph will never meet.
Reciprocal
A pair of numbers that multiply together to give 1.
Perpendicular
Two lines that meet at a right angle.