C6 Formulas and Letters

 $Calculate:\ 4-6^2=$  

• 4

• -4

• -32

• 40

 $Calculate\ \sqrt{36}+\sqrt{25}$  

• 11

• 23

• 61

• 30

 $Calculate\ -3^2+\left(-7\right)^2$  

• 58

• 40

• -58

• -40

 $Given\ y\ =\ 2x^2\ -\ 4.\ Calculate\ y\ for\ x\ =3$  

• 14

• 621

• 8

• 25

 $Given\ y\ =\ -x^2.\ Calculate\ y\ for\ x\ =\ -4$  

• 16

• -16

• 8

• -8

What shape does the graph of a quadratic formula have?

• linear shape

• straight line

• cube

• parabola

 $Simplify\ 2a\ +\ 3b$  

• No answer

• 6ab

• 5ab

• 9ab

 $Simplify\ 2a\ +\ 3a$  

• No answer

• 5a

• 6a

•  $5a^2$  

 $Simplify\ 2a\ \cdot\ 3b$  

• No answer

• 6ab

• 5ab

•  $5ab^2$  

 $Simplify\ 2x-7y-3x+2y$  

•  $-3x-9y$  

•  $-3x-5y$  

•  $-x-5y$  

•  $-1x-5y$