### All Algebra 1 Resources

## Example Questions

### Example Question #11 : How To Find Direct Variation

The amount of money Billy earns is directly proportional to his hours worked. Suppose he earns every eight hours of work. What is the minimum hours Billy must work in order to exceed ? Round to the nearest integer.

**Possible Answers:**

**Correct answer:**

Explanation:

Write the formula for direct proportionality.

Let:

Substitute twelve dollars and eight hours into this equation to solve for .

Divide by eight on both sides.

Substitute back into the formula.

To find out the minimum number of hours Billy must work to make , substitute into and solve for .

Multiply by two thirds on both sides.

Simplify both sides.

Billy must work at least hours to earn as much required.

Josh

Certified Tutor

Certified Tutor

University of California-San Diego, Bachelor in Arts, Urban Studies. Massachusetts Institute of Technology, Master of Science...

### All Algebra 1 Resources

Popular Subjects

ISEE Tutors in Philadelphia, GMAT Tutors in Chicago, SSAT Tutors in Miami, Computer Science Tutors in New York City, Math Tutors in San Francisco-Bay Area, English Tutors in Houston, ISEE Tutors in Atlanta, Statistics Tutors in Seattle, SAT Tutors in San Diego, Physics Tutors in Miami
Popular Courses & Classes

GRE Courses & Classes in Houston, GMAT Courses & Classes in Washington DC, Spanish Courses & Classes in Philadelphia, SAT Courses & Classes in Phoenix, LSAT Courses & Classes in Chicago, ISEE Courses & Classes in Boston, ACT Courses & Classes in Phoenix, ACT Courses & Classes in Miami, ISEE Courses & Classes in Washington DC, SSAT Courses & Classes in Miami
Popular Test Prep

SSAT Test Prep in Washington DC, MCAT Test Prep in San Francisco-Bay Area, GRE Test Prep in Los Angeles, ISEE Test Prep in Boston, MCAT Test Prep in New York City, SSAT Test Prep in San Diego, GRE Test Prep in San Diego, ACT Test Prep in Miami, SSAT Test Prep in Boston, SSAT Test Prep in Denver