For the first equation, y = x + 8, we can start by plotting the y-intercept at (0, 8) and then use the slope of 1 (since the coefficient of x is 1) to find additional points on the line.
For the second equation, 2x + y = -7, we can rearrange it to y = -2x - 7. We can start by plotting the y-intercept at (0, -7) and then use the slope of -2 to find additional points on the line.