Trading my right kidney for 4 brainlests

What is the equation in point slope form of the line that passes through the point (-1, -3) and has a slope of 4? y-1=4(x-3) or y+3=4(x+1)

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585