Question 854570
To keep the new equation as a line parallel, then this new equation is {{{y=-2x+b}}} and we find b by using the given point expected to be on this new line.


{{{b=y+2x}}}
{{{b=4+2(-8)}}}  ----- the coordinate values substituted for x and y
{{{b=4-16}}}
{{{b=-12}}}


{{{highlight(y=-2x-12)}}}