Determine if the equation y=2/7x represents a proportional relationship

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

The functions f(x) and g(x) are shown in the graph f(x)=x^2 what is g(x) ?

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.