1894882
Straight Line Graphs
- Formula
- y=mx±c
- m = gradient
- c = y intercept
- m = gradient
- y=mx±c
- Parallel Lines
- y=2x+1
y=2x-1
- Parallel lines
always have the
same gradient
- y=2x+1
y=2x-1
- Perpendicular Lines
- y=2x+1
y=(-1/2)x-3
- The gradient of a perpendicular
line is the negative reciprocal of
the line to which it is
perpendicular
- y=2x+1
y=(-1/2)x-3
- Gradient
- gradient is the difference in y / difference in x
- can be expressed as ∆Y/∆X
- can be expressed as ∆Y/∆X
- gradient is the difference in y / difference in x
- Y intercept
- The y intercept of a line is
the point at which that line
crosses the y axis
- The y intercept of a line is
the point at which that line
crosses the y axis
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