## DESCRIPTION
##   Distance from a Point to a Plane
## ENDDESCRIPTION

## KEYWORDS('Distance', 'Point', 'Plane')
## Tagged by nhamblet

## DBsubject('Calculus')
## DBchapter('Vectors and the Geometry of Space')
## DBsection('Three-Dimensional Coordinate Systems')
## Date('5/30/2000')
## Author('Joseph Neisendorfer')
## Institution('Rochester')
## TitleText1('')
## EditionText1('')
## AuthorText1('')
## Section1('')
## Problem1('')

DOCUMENT();

loadMacros(
"PG.pl",
"PGbasicmacros.pl",
"PGchoicemacros.pl",
"PGanswermacros.pl",
"PGauxiliaryFunctions.pl"
);

TEXT(beginproblem());
$showPartialCorrectAnswers = 0;

$a = random(0, 10);
$b = random(1, 10);
$c = random(-10, 10);
$ans = $b;

BEGIN_TEXT;
$PAR
What is the distance from the point ($a, $b, $c) to the xz-plane?
$BR
Distance = \{ ans_rule() \}
$BR
END_TEXT
ANS(num_cmp($ans));

ENDDOCUMENT();