Final answer:
To find the missing coefficient in the equation of the line that passes through the given point, substitute the coordinates of the point into the equation and solve for the missing coefficient.
Step-by-step explanation:
To find the missing coefficient in the equation of the line that passes through the given point, we can substitute the coordinates of the point into the equation and solve for the missing coefficient. In this case, the equation is ax - 4y = -1. Let's say the given point is (x, y). We substitute the coordinates into the equation: ax - 4y = -1. For example, if the point is (2, 3), the equation becomes 2a - 4(3) = -1. By solving this equation, we can determine the value of the missing coefficient, a.