Graphs
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10 Terms
Equation for straight line (3)
y = mx + c
m is the gradient (y change / x change)
c is the y intercept
either can be negative
Quadratic Formula
x = (-b ± √(b² - 4ac)) / 2a
Quadratic graphs
Graphs with an x² term
Equation for a quadratic line
0 = ax² + bx + c
Cubic graphs
Graphs with an x³ term
Equation for a cubic graph
ax3 + bx² + cx + d
Reciprocal graphs
y = n/x
It has two lines in differnet quadrants
The two lines never meet
Turning point
When in the form 0 = (x+a)2 + b turning point = (-a,b)
What property links parallel lines?
They have the same gradient
What property links perpendicular lines?
If line A has a gradient of x, the line perpendicular to it has a gradient of -1/x
Note 
Flashcards (31)