through: (-4,5), slope =-2

1 answer

To find the equation of a line that passes through the point \((-4, 5)\) with a slope of \(-2\), we can use the point-slope form of the equation of a line, which is given by:

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

Here, \(m\) is the slope, and \((x_1, y_1)\) is the point through which the line passes. Substituting in the values:

  • \(m = -2\)
  • \(x_1 = -4\)
  • \(y_1 = 5\)

We can plug in these values:

\[ y - 5 = -2(x - (-4)) \]

This simplifies to:

\[ y - 5 = -2(x + 4) \]

Now, distribute the \(-2\):

\[ y - 5 = -2x - 8 \]

Next, we add \(5\) to both sides to solve for \(y\):

\[ y = -2x - 8 + 5 \] \[ y = -2x - 3 \]

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

\[ y = -2x - 3 \]