hello
with the data given, i believe you intend to find the equation of a straight line and not standard form
slope = - 2
points = (-3, 4)
equation of a straight line is y = mx + c
m = slope
c = intercept
let's solve for the intercept
know that coordinate vale (x, y) = (-3, 4)
substitute the values into the equation
since we know our intercept as -2, we can write the equation of a straight line
y = -(2x + 2)