Question 515537
for the equation {{{2x + y = 10}}}


(5,__?__), ......here is {{{x=5}}}..plug it in {{{2x + y = 10}}} and solve for {{{y}}}

{{{2*5 + y = 10}}}

{{{10 + y = 10}}}

{{{ y = 10-10}}}

{{{y = 0}}}

so, you have (5,0),


(__?__, 10), ......here is {{{y=10}}}..plug it in {{{2x + y = 10}}} and solve for {{{x}}}

{{{2x + 10 = 10}}}

{{{2x = 10-10}}}

{{{ 2x = 0}}}

{{{x = 0}}}

so, you have (0,10),


(__?__, –2),......here is {{{y=-2}}}..plug it in {{{2x + y = 10}}} and solve for {{{x}}}

{{{2x -2 = 10}}}

{{{2x = 10+2}}}

{{{ 2x = 12}}}

{{{x = 6}}}

so, you have (6,-2),



 (7, __?__) ......here is {{{x=7}}}..plug it in {{{2x + y = 10}}} and solve for {{{y}}}

{{{2*7 + y = 10}}}

{{{14+ y = 10}}}

{{{ y = 10-14}}}

{{{y = -4}}}

so, you have (7,-4)