Transformations

Question 1

Stretches ?

Answer 1

Y= Kf(X)
Stretch parallel to the y axis , factor k
Y=f(Kx)
Stretch parallel to the x axis , by factor k .

Question 2

Translations?

Answer 2

Y - f(x) -> y =f(x-a) + b
Translation by the vector [a,b]

Question 3

Reflections ?

Answer 3

Y = f(x) -> y = -f(x)
Reflection in the x axis (meaning the y changes sign )
Y =f(x) -> y =f(-x)
Reflection in the y axis (meaning that the x changes sign)