Yes, you can express a function with an initial value and slope in linear equation form. The standard form of a linear equation is:
\[ y = mx + b \]
where:
- \( m \) is the slope,
- \( b \) is the y-intercept (initial value).
Given that the initial value is \( 2 \) (which corresponds to the y-intercept) and the slope is \( -1 \), you can substitute these values into the equation:
- The slope \( m = -1 \)
- The initial value (y-intercept) \( b = 2 \)
Therefore, the linear equation can be written as:
\[ y = -1x + 2 \]
or simply:
\[ y = -x + 2 \]
This equation represents the linear function you described.