A line has a slope of


5 and passes through the point (

4,

1). What is its equation in point-slope form?

1 answer

To write the equation of a line in point-slope form, you can use the formula:

\[ y - y_1 = m(x - x_1) \]

where \( m \) is the slope of the line, and \((x_1, y_1)\) is a point on the line.

Given:

  • Slope (\( m \)) = -5
  • Point (\( x_1, y_1 \)) = (-4, -1)

Substituting these values into the formula:

\[ y - (-1) = -5(x - (-4)) \]

This simplifies to:

\[ y + 1 = -5(x + 4) \]

Thus, the equation of the line in point-slope form is:

\[ y + 1 = -5(x + 4) \]