Question 231507
If the equation was just
{{{y = abs(x-5)}}}, then
{{{y(5) = 0}}},
If {{{x > 5}}}, {{{y > 0}}}, also
If {{{x < 5}}}, {{{y > 0}}}
So, this is just {{{abs(x)}}} shifted {{{5}}} units to the right
plotting:
{{{ graph( 400, 400, -8, 8, -8, 8, abs(x),abs(x-5)) }}}
Now I have to factor in {{{-2}}}. But first think. If I have
an expression for {{{x}}} which equals {{{y}}}, and I multiply
that expression by some number greater than zero, what does that do to 
{{{y}}}? It makes every {{{y}}} greater, and that makes the slope
of the line steeper. The minus sign means the function gets 
flipped over vertically.
Now I'll plot again {{{abs(x)}}} and {{{-2*abs(x-5)}}}
{{{ graph( 400, 400, -8, 10, -8, 8, abs(x),-2*abs(x-5)) }}}