Question 700377
{{{y=4x+9}}}; plug in {{{x=-2}}} and {{{y=1}}} to see if the ordered pair is a solution of the equation


{{{1=4*(-2)+9}}}

{{{1=-8+9}}}

{{{1=1}}}.....true; so,the ordered pair {{{is}}} a solution of the equation

see it on a graph:



{{{drawing(600, 600, -10, 10, -10, 15,circle(-2,1,0.1), locate(-2,1,P(-2,1)), grid(0),
graph( 600, 600, -10, 10, -10, 15,4x+9)) }}}