Which graph is used to show change in a given variable when a second variable is changed?

bar graph

line graph

histogram

scatterplot

Graphs are used to illustrate data in a manner which allows us to read their general trend easily, at a glance. The graph used to show the interdependency of two variables is the line graph. Line graphs show how the value of the dependent variable, which is placed on the y-axis, varies as the value of the independent variable, which is placed on the x-axis, is changed. Therefore, the second option is correct.