Prep 3 Alg U1

 $The\ \ number\ of\ solution\ of\ the\ 2\ equations\ \ \ x+y=1\ ,\ y+x=2\ is\ .........$  

If x-2=0 , y+2x=0 , the the s.s of these 2 equation is ......

If there is an infinite number of solutions of the 2 equations 2x+3y=5 , ax+6y=10 , the a= .........

 $aX^2+bX+c=0\ ,\ if\ b^2-4ac>0\ ,\ the\ the\ equation\ has\ ......\ of\ roots.$  In the equation : a

 $The\ s.s\ of\ the\ 2\ equations\ x=\frac{1}{y}\ and\ x=3\ is\ .......$  

 $The\ s.s\ of\ the\ equation\ of\ the\ Curve\ of\ a\ quadratic\ equation\ which\ passes\ through\ the\ point\ \left(-3\ ,\ 0\right)\ is\ ..............$  

 $The\ s.s\ of\ the\ 2\ equations\ :\ x+y=2\ ,\ \frac{1}{x}+\frac{1}{y}=2\ is\ ..........\$  

 $Find\ the\ s.s\ of\ the\ 2\ equations\ :\ x+y=0\ ,\ \frac{-4}{y}=x$  

By using general formula find the s.s of  $x+\frac{4}{x}=6$   rounding the result to the nearest one decimal.

Find the s.s of the 2 equations x+2y=4 , y-2x=-3 , graphically