he equation below describes a proportional relationship between x and y. What is the constant of proportionality? y = 4/9x

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

Does anyone know how to do geometryme with this problem

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?