What kind of angle is created by the intersection of two perpendicular lines, rays, or line segments

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Find the quotient. 50a2 – 98b2 -5a +7b

Does the point (1, sqrt 7) lie on circle shown.