Question

[4_06]Choose the equation below that represents the line passing through the point (-3, -1) with a slope of 4.

y - 1 = 4(x - 3)

y + 1 = 4(x + 3)

y - 3 = 4(x + 1)

y + 3 = 4(x - 1)

Answer 1

The formula for a line with coordinates is:
\[y-y_{1}=m(x-x_{1})\]
Since they give you the gradient and the coordinates just plug them in to the formula:
y - (-1) = 4( x - (-3) )
y + 1 = 4 ( x + 3 )