Step-by-step explanation:
To find an equation of a line in point slope form when given the slope and a point we use the formula
[tex]y - y_1 = m(x - x_1) [/tex]
where
m is the slope
( x1 , y1) is the point
From the question the point is (1,-1) and the slope is 4
The equation of the line is
[tex]y + 1 = 4(x - 1)[/tex]
Hope this helps you
