Functions and graphs

If asked to find an expression, what must you do at the end?

Expand any brackets

What points do you edit when you’re drawing a new graph

All points where the graph hits the x or y axis

What does -f do, in y=-f(x)

Flip the graph on its y axis

Do you flip, or multiply first?

Flip then multiply

What does +c do in y=f(x) +c

graph shifts up

What does -c do in y=f(x) -c

Graph shifts down

What does (x+c) do in y=f(x+c)

Graph moves left

What does (x-c) do in y=f(x-c)

Graph moves right

What does -x do in y=f(-x)

Graph flips on the x axis

What does k do in y=k(f(x))

Multiplies every y co-ord by k

What does k do in y=f(kx)

Divides every x co-ord by k

State the coordinates of f(x)=log₂x

(2,1)