Answer:
y - 3 = - 2(x - 1)
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = - 2 and (a, b) = (1, 3) , thus
y - 3 = - 2(x - 1) ← in point- slope form
