Which statement explains how the lines x+y=2 and y=x+4 are related

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.

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Which of the following is true for the relation f(x)=2x^2+1