9. write an equation of your own that has infinitely many solutions. transform the equation to demonstrate that it has infinitely many solutions.

10. write an equation of your own that has no solution. transform the equation to demonstrate that it has no solution.

9. x=x

10. 4=5

9. Because a variable equals itself, any real number, positive or negative, can be put into the variable and it will always be true

10. Because the numbers on both sides of the equation do not truly equal each-other, it has no solutions.

df =

both have same length