## How to use the INTERCEPT function

The INTERCEPT function returns a value representing the y-value where a line intersects the y-axis. The line is calculated using the method of least squares based on known x- and y-values.

Use the INTERCEPT function when you want to build a linear regression line based on this straight line equation y = mx + c. c is where the line cuts the y-axis, m is the slope of the line and can be calculated using the SLOPE function.

Formula in cell E3:

### Excel Function Syntax

INTERCEPT(*known_y's, known_x's*)

### Arguments

known_y's |
Required. An array or cell reference to dependent data points. |

known_x's |
Required. An array or cell reference to independent data points. |

### Comments

Zero values are included but text, logical values and empty cells are ignored.

The SLOPE function returns

- #N/A! error if there are a different number of values inÂ
*known_y'sÂ*andÂ*known_x's**.*

Equation for the INTERCEPT function:

Equation for b:

The following chart demonstratesÂ the x- and y-values used in the top image and where the fitted line intersects the y-axis which also corresponds to the value calculated by the INTERCEPT function.

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### Functions in 'Statistical'

The INTERCEPT function function is one of many functions in the 'Statistical' category.

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