What does it mean to solve a problem graphically?

1 Answer
Mar 3, 2018

See explanation.

Explanation:

To solve the problrm graphically means to plot function graphs in the single coordinate plane and look for points where the graphs meet.

Example:

To graphically solve a system:

#{(x+y=7),(x-y=5):}#

you have to draw two graphs on a single coordinate plane:

graph{(x+y-7)(x-y-5)=0 [-0.875, 19.125, -4.88, 5.12]}

The graphs cross at the point #(6,1)# this means that the system has a solution:

#{(x=6),(y=1):}#