What is the rate of change of the line

There are several unique characteristics of qualitative research that make it distinct from quantitative research. describe the aspects of qualitative research and the elements of design that contribute to the rigor of the work. what actions of the researcher can compromise the integrity of the findings?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?