Question 176352
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Given: {{{2x/5y=3/4}}}
Cross multiply---->{{{4*2x=3*5y}}}
{{{8x=15y}}} divide both by {{{8y}}}:
{{{8x/8y=15y/8y}}}--->{{{cross(8)x/cross(8)y=15*cross(y)/(8*cross(y))}}}
{{{highlight(x/y=15/8)}}}
Now putting this into Equation:
{{{x/y=15/8}}}
cross multiply:
{{{8x=15y}}}----->{{{highlight(8x-15y=0)}}}
We'll see the graph:
{{{drawing(400,400,-10,18,-10,10,grid(1),graph(400,400,-10,18,-10,10,(8/15)x),blue(circle(15,8,.18))))}}}------> see point: {{{x=15}}} & {{{y=8}}} as per our Ratio above.
thank you,
Jojo</pre>