KSSM ADDMATH F4 (CHAPTER 3) by Cikgu Nizam<3

A collection of 220 coins consists of 10cents, 20cents and 50cents coins. The total number of 10cents coins and 20cents coins exceeds the number of 50cents coins by 100. If the total value of the collection is RM64, which of the following is the three equations that satisfy the above conditions?

• $\ x+y+z=220$
  $x+y-z=100,$
  $0.1x+0.2y+0.5z=64$
  

• $\ x+y+z=100$
  $x+y-z=220,$
  $0.1x+0.2y+0.5z=64$
  

• $\ x+y+z=220$
  $x+y-z=64,$
  $0.1x+0.2y+0.5z=100$

Solve the following

 $x+2y+z=3$  

 $2x-y+3z=13$  
 $2x+3y+4z=11$  

•  $x=-1,$   $y=3,$   $z=2$  

•  $x=3,$   $y=2,$   $z=-1$  

•  $x=3,$   $y=-1,$   $z=2$  

•  $x=2,$   $y=-1,$   $z=3$  

 $\frac{2}{x}+2y=x$  

State whether the following equation is linear or a non-linear equation?

• Linear equation

• Non linear equation

 $x+3y=5$  
 $x^2+2y^2=6$  
Solve the following simultaneous equation.

•  $x=\frac{2}{11},\ y=\frac{-19}{11}\ or\ x=2,\ y=1$  

•  $x=\frac{19}{11},\ y=\frac{-2}{11}\ or\ x=1,\ y=2$  

•  $x=\frac{-2}{11},\ y=\frac{19}{11}\ or\ x=1,\ y=2$  

•  $x=\frac{-2}{11},\ y=\frac{19}{11}\ or\ x=2,\ y=1$