Final answer:
The calculated slope of the line passing through the points (-20, 18) and (30, 14) is -0.08. There seems to be an error because this result does not match any of the options provided.
Step-by-step explanation:
The slope of a line that passes through two points can be found using the formula (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of the two points. To find the slope of the line that passes through the points (-20, 18) and (30, 14), we can plug these values into the formula:
Slope = (14 - 18) / (30 - (-20))
Slope = (-4) / (50)
Slope = -0.08
However, this result is not listed in the options provided. It appears there might be a typo in the question or the options given. Please double-check your numbers. None of the provided answers a) -0.1 b) -0.2 c) -0.25 d) -0.3 matches with the calculation.