The slope of the line is -½, which will mean that it slopes downhill and is not very steep since the absolute value of the slope (|-½| is ½) is pretty small. We also know that it crosses the y-axis at -2. We will start by plotting the y-intercept and then counting over to the next point using a slope of -½.
Remember that slope equals rise/run, so this line changes 1 in the vertical direction for every 2 in the horizontal. Also, since it is a negative slope, make sure that you plot your points in the correct direction, downhill.