Rate of Change Calculator
This calculator helps you determine the rate of change between two points on a graph or dataset. The rate of change is a measure of how one quantity changes in relation to another quantity. It is often represented as the slope of a line.
function calculateRateOfChange() {
var y2 = parseFloat(document.getElementById("y2").value);
var y1 = parseFloat(document.getElementById("y1").value);
var x2 = parseFloat(document.getElementById("x2").value);
var x1 = parseFloat(document.getElementById("x1").value);
var resultDiv = document.getElementById("result");
if (isNaN(y2) || isNaN(y1) || isNaN(x2) || isNaN(x1)) {
resultDiv.innerHTML = "Please enter valid numbers for all fields.";
return;
}
if (x2 === x1) {
resultDiv.innerHTML = "The rate of change is undefined because the change in x is zero (vertical line).";
return;
}
var rateOfChange = (y2 – y1) / (x2 – x1);
resultDiv.innerHTML = "The Rate of Change is:
" + rateOfChange.toFixed(2) + "";
}
#rateOfChangeCalculator {
font-family: Arial, sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 400px;
margin: 20px auto;
background-color: #f9f9f9;
}
#rateOfChangeCalculator h2 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.calculator-inputs {
display: grid;
grid-template-columns: 1fr;
gap: 15px;
}
.input-group {
display: flex;
flex-direction: column;
}
.input-group label {
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.input-group input {
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 1em;
}
#rateOfChangeCalculator button {
background-color: #4CAF50;
color: white;
padding: 12px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 1em;
transition: background-color 0.3s ease;
margin-top: 10px;
}
#rateOfChangeCalculator button:hover {
background-color: #45a049;
}
.calculator-result {
margin-top: 20px;
padding: 15px;
background-color: #e0f7fa;
border: 1px solid #00bcd4;
border-radius: 4px;
text-align: center;
font-size: 1.1em;
color: #00796b;
}