2TTO maths Ch5 Test prep.

Calculate y for x=-4

Answer explanation

Don't forget to use brackets,

when you're filling in a negative number for x.

Calculate y for x = 10

Answer explanation

The minus is part of the formula, so no brackets necessary!

What shape does the graph of the quadratic fomula have?

Answer explanation

A negative gradient in a quadratic formula gives a cap parabola,

A positive gradient in a quadratic formula gives a cup parabola.

Calculate y for x = -8

Answer explanation

Don't forget to use brackets when filling in negative numbers for x.

• P(1.5, -4)
• Q(-1, 1)
• R( 5, -35)
• S( -4, -69)
• T(-0.5 ; 0.25)

Answer explanation

Fill in the x-coordinate of a point, to check whether the fomulas gives the matching y-coordinate of that point.

Which of these numbers are square numbers? (Choose all that apply)

• 36

• 48

• 56

• 64

• 80