IIFT Number Theory — practice questions

Matching pairs

1. A

   Slope formula

   B

   (y₂ − y₁) / (x₂ − x₁)

2. A

   Distance formula

   B

   √((x₂−x₁)² + (y₂−y₁)²)

3. A

   Midpoint formula

   B

   ((x₁+x₂)/2, (y₁+y₂)/2)

4. A

   y-intercept form

   B

   y = mx + b

5. A

   Point-slope form

   B

   y − y₁ = m(x − x₁)

6. A

   Parallel lines

   B

   Same slope

Instructions

Flip cards to match each formula to its name.

Matching pairs

1. Left

   Prime

   Right

   Exactly two divisors: 1 and itself

2. Left

   Composite

   Right

   More than two positive divisors

3. Left

   Perfect Square

   Right

   Square of an integer

4. Left

   Co-prime

   Right

   GCD equals 1

Correct answer: B. 4x − 9y