Answer:
y = x - 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = 1, thus
y = x + c ← is the partial equation
To find c substitute (5, 1) into the partial equation
1 = 5 + c ⇒ 1 - 5 = - 4
y = x - 4 ← equation of line
