How do you graph 2x-y=4 using a table of values?
1 Answer
Rearrange equation, sub in values of
Explanation:
- rearrange the equation to give a more familiar form (like
#y = mx+c# )
move#2x# over gives,
#-y = -2x + 4#
multiply by#-1# gives,
#y = 2x - 4# - sub in values of
#x# , calc values of#y#
when#x = 0, y = -4#
when#x = 1, y = -2#
when#x = 2, y = 0#
when#x = 3, y = +2# - make a results table
already done, see above - plot these points (in red) on a standard x-y axes (in black) . gives a straight line (in blue).