Question 288725
No intersection points. 
{{{y=x^2}}}
{{{y=2x-4}}}
{{{ graph( 300, 300, -10, 10, -10, 10, x^2, x-3) }}} 
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.
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One intersection points. 
{{{y=x^2}}}
{{{y=2x-1}}}
{{{ graph( 300, 300, -10, 10, -10, 10, x^2,
2x-1) }}} .
.
.
Two intersection points. 
{{{y=x^2}}}
{{{y=2x+1}}}
{{{ graph( 300, 300, -10, 10, -10, 10, x^2, 2x+1) }}}