I need help could anyone help <333

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

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Factor the expression using the gcf. the expression 21m−49n factored using the gcf