What is the slope of a line perpendicular to ab if a (-2,-1) and b (0,4)

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf