Question 962910
three order pairs for {{{y=-23}}}:

here you have a horizontal line; it is parallel to x-axis and passes through ({{{0}}},{{{-23}}})

since a line is horizontal {{{y=-23}}} for any value of {{{x}}}; so, three order pairs could be: ({{{-2}}},{{{-23}}}), ({{{1}}},{{{-23}}}),({{{3}}},{{{-23}}}) or any other three order pairs


{{{drawing( 600, 600, -10, 10, -30, 10,
circle(-2,-23,.12),circle(1,-23,.12),circle(3,-23,.12),
locate(-2,-23.3,p(-2,-23)),locate(1.3,-23.3,p(1,-23)),locate(2.8,-23.3,p(3,-23)),
 graph( 600, 600, -10, 10, -30, 10, -23,-23)) }}}