The equation of a straight line in slope-intercept form is given by \( y = mx + b \), where \( m \) is the slope and \( b \) is the y-intercept.
Given that the slope \( m \) is 2 and the y-intercept \( b \) is 7, we can substitute these values into the equation:
\[ y = 2x + 7 \]
Thus, the equation of the function is:
\[ y = 2x + 7 \]