EASY
AS and A Level
IMPORTANT
Earn 100

Find the equation of each graph after the given transformation.

(d) y=2x2-8x+10 after a stretch parallel to the x -axis with stretch factor 2.

Important Questions on Functions

EASY
AS and A Level
IMPORTANT

The diagram shows the graph of y=gx. Sketch the graph of each of the following.

Question Image

 y=g(x+2)+3.

EASY
AS and A Level
IMPORTANT

Find the equation of the image of the curve y=x2 after each of the following combinations of transformations and, in each case, sketch the graph of the resulting curve.

(a) A stretch in the x -direction with factor 2 followed by a translation by the vector 50.

MEDIUM
AS and A Level
IMPORTANT

Functions f and g are defined for x by:

f:x3x-1

g:x5x-x2

Express gf(x) in the form a-b(x-c)2, where a,b & c are constants.

EASY
AS and A Level
IMPORTANT

Question Image

The diagram shows a sketch of the curve with equation y=f(x).

(b) Describe fully a sequence of two transformations that maps the graph of y=fx onto the graph of y=f(3-x)

EASY
AS and A Level
IMPORTANT

A curve has equation y=x2+6x+8.

Sketch the curve, showing the coordinates of any axes crossing points.

EASY
AS and A Level
IMPORTANT

The function f:xx2-2 is defined for the domain x0.

(a) Find f-1(x) and state the domain of f-1.

EASY
AS and A Level
IMPORTANT

The function f:xx2-2 is defined for the domain x0.

On the same diagram, sketch the graphs of f(x) and f-1(x).

EASY
AS and A Level
IMPORTANT
(i) Express -x2+6x-5 in the form a(x+b)2+c, where a,b & c are constants. The function f:x-x2+6x-5 is defined for xm, where m is a constant.