Please help, sorry if it’s blurry.

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

What is the first step of an indirect proof of a number that is divisible by two