Sheena, this is the solution:
Step 1: Let's recall that the equation of a line always has the form:
y = mx + b, where m is the slope and b is the y-intercept.
Step 2: Let's calculate the y-intercept, as follows:
-15 = -2 * 8 + b
-15 = -16 + b
b = -15 + 16
b = 1 (This is the y-intercept)
Step 3: Finally, we can write down the equation that passes through the point (8, -15) with a slope of -2:
y = -2x + 1