Aspring required a force of 1.0 n to compress it 0.1 m. how much work is required to stretch the spring 0.4 m?

Hooke's law says that there is a linear relationship between distance and force
(f = -kx) So we would take (1/2)(10)(0.4^2) =4   
(10 N)(0.4 m) = 4 Joules.

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.