In a table of values, if the "first differences" are all equal, this tells us that the relation must be:

In a table of values, if the "second differences" are all equal, but not zero, this tells us that the relation must be:

• x-intercept

• y-intercept

• vertex

• vertical shift

This key point on a parabola can be at the very bottom (minimum) or at the very top (maximum). What is this point called?

What is another name for the x-intercepts of a parabola?

This vertical line can be drawn through the centre of a parabola and cuts the parabola directly in half.

• Axis of symmetry

• Vertex line

• y-axis

• Asymptote

• Opens up

• Opens down

• Opens left

• Opens right