SAT Math Practice Question #10188 - SATify | SATify

#10188

linear equations

coordinate geometry

slopes

hard

75 sec

The table above shows the coordinates of three points on a line in the $x y$ -plane. The points are $(a, b)$ , $(a + 3, b + 15)$ , and $(a + 5, c)$ , where $a$ , $b$ , and $c$ are constants. What is the value of $c - b$ ?

$x$	$y$
$a$	$b$
$a + 3$	$b + 15$
$a + 5$	$c$

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.