Scientists have discovered a new planet that is exactly the same as Mars, except it has three times the mass of Mars. How will gravity on the surface of this planet compare to the gravity on Mars?

The masses of the objects and their densities

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.