Help please!!! Is it true or false

Karianne and lucius are analyzing a linear function on a graph. karianne says that unit rate is equal to rate of change, but that slope is calculated differently. lucius says that unit rate, rate of change, and slope are calculated the same way. who is correct? explain your answer.

What is the size of the matrix resulting from

What is not true about kl and mn? what is mn? (show )