For the demand equation below, $x$ represents the quantity demanded in units of 1000 and $p$ is the unit price in dollars.
$$2x+4p-32=0;p=2$$
(a) Sketch the demand curve. (Sketch the curve as a segment.)

Step 1 ：Given the demand equation: $2x+4p-32=0$ and $p=2$

Step 2 ：Find the value of $x$ when $p=2$:

Step 3 ：$2x+4(2)-32=0$

Step 4 ：$2x+8-32=0$

Step 5 ：$2x=24$

Step 6 ：$x=12$

Step 7 ：Find the general equation for $x$ in terms of $p$:

Step 8 ：$2x+4p-32=0$

Step 9 ：$2x=-4p+32$

Step 10 ：$x=-2p+16$

Step 11 ：The demand curve can be represented by the equation $x=-2p+16$. To sketch the curve as a segment, plot the points $(x,p)$ for different values of $p$ and connect them with a line. The curve will be a straight line with a slope of -2 and a y-intercept of 16.