Graph the straight line corresponding to the rule (y=7x) for 0≤x≤15

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I have attempted this question but I don't really know where to even start. I have graphed y=7x but i'm not sure where to go from there. I am a bit stuck on graphing a line that is relating to 0≤x≤15.

Thanks in advance!

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Note that if $x=0$ then, as we're given $y=7x$, so we get $$y=7\times 0=0$$ Therefore we have an initial point on the plane: $A=(0,0)$. The same story can be done for $x=15$ to find another point which is $B=(15,7\times 15)=(15,105)$. Now draw the line $y=7x$ first and then bold the line between $A$ and $B$.