Name: SAT Math Help & School Math Mastery
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#10167

linear equations

coordinate geometry

slopes

hard

45 sec

Line $a$ is defined by $\frac{1}{2} x + \frac{1}{3} y = 1$ . Line $b$ is perpendicular to line $a$ in the $x y$ -plane. What is the slope of line $b$ ?

• 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.