Question 188251
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Given {{{system(y=-6^2+3x(EQN1), y=-3x-6x-1(EQN2))}}}
In {{{EQN1}}},
{{{y=36+3x}}}, where{{{system(Slope=m=3,yIntercept=36)}}}
Let fy=0 
{{{0=36+3x}}} ---> {{{3x=-36}}} --->{{{cross(3)x/cross(3)=cross(-36)12/cross(3)}}} ---> {{{red(x=-12)}}}, X-Intercept
Let fx=0 ----> {{{y=36+3(0)=red(36)}}}, Y-Intercept
See graph,
{{{drawing(400,400,-15,8,-5,40,graph(400,400,-15,8,-5,40,36+3x),blue(circle(-12,0,.20)),blue(circle(0,36,.20)),green(locate(1,36,y=Intercept=36)),green(locate(-11,2.5,x=Intercept=-12)))}}}



In {{{EQN2}}},=> {{{y=-3x-6x-1}}}
{{{y=-9x-1}}}, where{{{system(SLope=-9,yIntercept=-1)}}}
Let fy=0 
{{{0=-9x-1}}} ----> {{{9x=-1}}}--->{{{red(x=-1/9)}}}, X -Intercept
Let fx=0
{{{y=-9(0)-1=red(-1)}}}, Y-Intercept
See graph,
{{{drawing(400,400,-5,5,-5,5,graph(400,400,-5,5,-5,5,-9x-1),blue(circle(-1/9,0,.08)),blue(circle(0,-1,.08)),green(locate(.2,.9,X=intercept=-1/9)),green(locate(.3,-1,Y=intercept=-1)))}}}
Thank you,
Jojo</font>