If prepared means developed, invented, or whatever, possibly Rene Descartes. You may have heard of Cartesian coordinates.
If by prepared, you mean "Who drew that line graph?", you haven't provided enough information.
a double line graph is a graph that is same as a line graph but there are two lines
a bar graph is a graph that displays data using bars and a line graph is a graph that displays data in a line
A continuous graph that shows change over time.
A line graph.A line graph.A line graph.A line graph.
the line graph is the temperature!
line graph x line graph = divided line graph
no because the broken line graph is a line graph that is broken da!
a double line graph is a graph that is same as a line graph but there are two lines
a bar graph is a graph that displays data using bars and a line graph is a graph that displays data in a line
A continuous graph that shows change over time.
A line graph is a line plotted on a 4 quadrant graph. A line plot is a graph that plots values on a graph !
A line graph.A line graph.A line graph.A line graph.
a line graph is over time. a bar graph is not
line graph
the line graph is the temperature!
A cluster in a line graph is the major part of the line graph that connects to the plot.
a broken line graph has numbres going everywhere and a line graph has numbers going on a steady rate (e.g 50,10,90 for a broken line graph) (eg 2,4,6 for a line graph) hope i helped :D