Step-by-step explanation:
Equation of line in slope point form is given as:
[tex]y - y_1 = m (x - x_1) \\ \\ \therefore \: y - 5 = 1 (x - 4) \\ \\ \therefore \: y - 5 = x - 4 \\ \\ \therefore \: y = x - 4 + 5 \\ \\ \therefore \: y = x + 1 \\ \\ or \: \: x - y + 1 = 0[/tex]
Is the required equation of line.