6x+8=50 x 7(9/6 whats the improper fraction

Which equation represents the function on the graph?

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

Which statements are true about additional information for proving that the triangles are congruent check all that apply