Chapter 3 - Linear and quadratic functions

Question 1

Graphs of linear functions

Answer 1

Gradients of parallel lines are equal

Product of the gradients of two particular lines is -1

Question 2

Transformations of the graph y=f(x)

Answer 2

y= -f(x) is a reflection in the x-axis
y= f(-x) is a reflection in the y-axis
y= af(x) is a vertical dilation with a scale factor |a|
y= f(qx) is a horizontal dilation with a scale factor 1/|q|