Question 191690
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If <font color=blue>x</font> = number of deaths by accident in a 1 year.
So, <font color=blue>7*x</font> = number of deaths by heart disease, being 7 times that of accidents.


If we see the graph,
{{{drawing(400,400,-3,10,-3,30,graph(400,400,-3,10,-3,30),blue(circle(1,7,.11)),blue(circle(2,14,.11)),blue(circle(3,21,.11)),blue(circle(4,28,.11)),red(locate(.5,28,heart)),red(locate(0.5,27,disease)),red(locate(5,-1,accidents)),blue(locate(5,-2,Years)),green(line(0,21,3,21)),green(line(3,21,3,0)))}}} ---> As you see, each year, there will be 1 accident equivalent to 7 deaths by heart disease.


* In Year 3 , death by accidents will be <font color=blue>x = 3 </font>, so
death by heart disease will be <font color=blue>7*3=21</font> 


Thank you,
Jojo</font>