The blue shaded area of the graph described what about this function shown in the picture?

Write and solve a real word problem that involves determining distance on a coordinate plane

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)