Graphs Flashcards
y = mx + c
Straight line graph
y = ax2 + bx + c
Bucket shape
y = ax3 + bx2 + cx + d
Wiggle in the middle
y = a/x
Symmetrical about y= x and y=-x
With curves in opposing sections of the axis
xy = a
Symmetrical about y= x and y=-x
With curves in opposing sections of the axis
y=k to the power of x
K had to be positive
Curve upwards when k is more than one
Above the x axis
x2 + y2 = r2
Circle graph around the centre 0,0
How can you tell something is a straight line graph?
y = mx + c
How can you tell something is a bucket graph?
y = ax2 + bx + c
B and c can be zero
How can you tell something is a wiggle graph?
x3 graphs
y = ax3 + bx2 + d
How can you tell something is a symmetrical curved graph around the lines y=x and y=-x?
1/x graphs
y=a/x
xy=a
How can you tell something is a curved graph above the x axis going through 0,1?
k to the power of x
Where k is a positive number
y=k to the power of x
How can you tell something is a circle graph?
x2 + y2 = r2
When is there a y stretch?
y = k x k(x)
When is there a y shift?
y = f(x) + a
