This isn't a complete question. Maybe your wondering how to find the slope of this line?
If so, to find the slope we can use the following formula:
$$slope = \frac{y_2-y_1}{x_2-x_1}$$
Put in the coordinates:
$$slope = \frac{1- (-1)}{-3- (-7)}$$
$$slope = \frac{1+(+1)}{-3+(+7)}$$
$$slope = \frac{2}{4}$$
$$slope=\frac{1}{2}$$
This isn't a complete question. Maybe your wondering how to find the slope of this line?
If so, to find the slope we can use the following formula:
$$slope = \frac{y_2-y_1}{x_2-x_1}$$
Put in the coordinates:
$$slope = \frac{1- (-1)}{-3- (-7)}$$
$$slope = \frac{1+(+1)}{-3+(+7)}$$
$$slope = \frac{2}{4}$$
$$slope=\frac{1}{2}$$