Help please I need help

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

How do you determine whether a relationship represented as as graph is linear or nonlinear

Consider the following estimates from the early 2010s of shares of income to each group. country poorest 40% next 30% richest 30% bolivia 10 25 65 chile 10 20 70 uruguay 20 30 50 1.) using the 4-point curved line drawing tool, plot the lorenz curve for bolivia. properly label your curve. 2.) using the 4-point curved line drawing tool, plot the lorenz curve for uruguay. properly label your curve.