Year 8 Mathematics - Algebra

 $a\times b\$  is the same as writing

•  $a\cdot b\$  or  $ab$  

•  $\frac{a}{b}$  

•  $a+b$  

•  $ab^2$  

How many terms are in the following algebraic expression?

 $3x^2+2xy-12y+7$  

• 1

• 2

• 3

• 4

Select the true statements below in relation to the following algebraic expression.

 $m^2+5mn+3m-n-7$  

• the coefficient for  $m^2$  is 0

• there are 5 terms in the expression

• the constant term is positive seven

• the coefficient for  $n$  is  $-1$  

Write an algebraic expression for 'the product of t and 9'.

If  $x=3\$ and  $y=7$ , evaluate the following algebraic expression  $2xy+9x-y+18$  

Select the true statement below in relation to the following algebraic expression.

 $4xy^2+8yx^2-3x^2+2y^2+9x^2-x^2$  

•  $-3x^2$ ,  $9x^2$  and  $-x^2$  are all like terms

•  $4xy^2$  and  $8yx^2$  are like terms 

Simplify the following algebraic expression by adding and subtracting like terms.

 $12pq-3p+7p+4pq+q$  

•  $16pq+4p+q$  

•  $10p+16pq+1q$  

•  $20pq$  

Evaluate the following expression when

 $x=4$  and  $y=-5$ 

  $x^2+2xy-xy+5x-2y$  

 $18st+22s+20t+3s+13st-2t$  

Select the correctly simplified expression for the following

•  $31st+25s+18t$  

•  $31st^2-19s-18t$  

•  $74st$  

Select the below equivalent equations to $3x+2y-7$  

•  $5x-2x+y+y+10-17$  

•  $-9+5-3\ -7x+2y+10x$  

•  $x+x+x+y+y+1+1+1+1+1+2$