The linear function y = 3x is used to calculate the cost of 23 balloons as $69
<h3>Linear Function</h3>
A linear function is a function that represents a straight line on the coordinate plane. For example, y = 3x - 2 represents a straight line on a coordinate plane and hence it represents a linear function. Since y can be replaced with f(x), this function can be written as f(x) = 3x - 2.
A linear function is of the form f(x) = mx + b where 'm' and 'b' are real numbers. Isn't it looking like the slope-intercept form of a line which is expressed as y = mx + b? Yes, this is because a linear function represents a line, i.e., its graph is a line. Here,
- 'm' is the slope of the line
- 'b' is the y-intercept of the line
- 'x' is the independent variable
- 'y' (or f(x)) is the dependent variable
y = 3x
x = number of balloons
The cost of 1 balloon = $3
the cost of 23 balloon = x
x = 23 * 3
x = 69
The cost of 23 balloon is $69
Learn more on linear function here;
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