📐 Direct Variation Calculator
Calculate direct variation y = kx
y = kx
How to Use This Calculator
1
Enter Constant k
Type the constant of variation (k). This is the ratio y/x.
2
Enter x
Type the value of x.
3
Calculate
See the result y = kx.
Formula
y = kx
where k is the constant of variation
Example 1: y varies directly with x, k = 2, x = 5
y = kx = 2 × 5 = 10
Example 2: Distance = Speed × Time
If speed (k) = 60 mph, time (x) = 3 hours:
Distance = 60 × 3 = 180 miles
About Direct Variation Calculator
The Direct Variation Calculator solves direct variation problems where y is proportional to x. In direct variation, y = kx, where k is a constant. This means y increases or decreases by the same factor as x changes.
When to Use This Calculator
- Proportional Relationships: Find y when x changes
- Real-World Problems: Solve direct variation scenarios
- Algebra: Practice variation equations
Key Characteristics
- As x increases, y increases by the same factor
- Graph is a straight line through origin
- Ratio y/x is always constant
Frequently Asked Questions
What is direct variation?
Direct variation means y is proportional to x, following the equation y = kx where k is constant.
How do I find k?
k = y/x. Divide any y value by its corresponding x value to find the constant.