Recognising linear and non-linear graphs

Pick the equation that best describes the graph

• $y=2x+2$

• $y=-2x+2$

• $y=-2x-2$

• $y=2x-2$

Which equation best describes the curve

• $y=x^3+1$

• $y=x^2+1$

• $y=-x^3+1$

• $y=3^x$

Pick the equation of the circle with radius 5

• $y^2=25+x^2$

• $y^2=x^2-25$

• $y^2=25-x^2$

• $y=25-x^2$

Pick the correct pair

• $L:\ y=\left(x+4\right)\left(x-2\right)\ and\$
  $M:\ y=\left(x+2\right)\left(x-4\right)$
  

• $L:\ y=\left(x-4\right)\left(x+2\right)\ and\$
  
  $M:\ y=\left(x-2\right)\left(x+4\right)$
  

• $L:\ y=\left(x-4\right)\left(x-2\right)\ and\$
  $M:\ y=\left(x+2\right)\left(x+4\right)$
  

• $L:\ y=\left(x+4\right)\left(x+2\right)\ and\$
  $M:\ y=\left(x-2\right)\left(x-4\right)$
  

Graphs G and J are both examples of

• hyperbolas

• cubics

• parabolas

• exponential

Graphs G and J have equations

• $G:\ y=-2^x\ and\ J:\ y=2^x\ \$

• $G:\ y=-2^{-x}\ \ and\ J:\ y=2^x$

• $G:\ y=-2^x\ \ and\ J:\ y=-2^{-x}$

• $G:\ y=2^x\ \ and\ J:\ y=-2^x$

Pick the best equation

• $y=ax^2$

• $y=a^x$

• $y=\frac{k}{x}$

• $y=mx+c$

The circle $\left(x-1\right)^2+\left(y+2\right)^2=9$  has its centre at

• (1,2)

• (-1,-2)

• (1.-2)

• (-1,2)

 $x^2-2x+y^2+4y\ =0\$  can be written as 

•  $\left(x+1\right)^2+\left(y-2\right)^2=25$  

•  $\left(x+1\right)^2+\left(y-2\right)^2=5$  

•  $\left(x-1\right)^2+\left(y+2\right)^2=25$  

•  $\left(x-1\right)^2+\left(y+2\right)^2=5$  

• $x^2+y^2=4$

• $x^2+y^2>4$

• $x^2+y^2\le4$

• $x^2+y^2<4$