what is the equation of the line that passes through (-2,-5) and is parallel to y=x+3

1 answer

To find the equation of a line that passes through the point \((-2, -5)\) and is parallel to the line given by the equation \(y = x + 3\), we first note that parallel lines have the same slope.

The slope of the line \(y = x + 3\) is 1 (since it can be written in the slope-intercept form \(y = mx + b\), where \(m\) is the slope).

Since the new line is parallel, it also has a slope \(m = 1\).

Now, we can use the point-slope form of the equation of a line, which is given by:

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

where \((x_1, y_1)\) is a point on the line, and \(m\) is the slope. Plugging in the point \((-2, -5)\) and the slope \(1\):

\[ y - (-5) = 1(x - (-2)) \]

Simplifying this:

\[ y + 5 = 1(x + 2) \] \[ y + 5 = x + 2 \] \[ y = x + 2 - 5 \] \[ y = x - 3 \]

Thus, the equation of the line that passes through the point \((-2, -5)\) and is parallel to the line \(y = x + 3\) is:

\[ y = x - 3 \]