Final answer:
To calculate the slope of a straight line between the points (-4, 10) and (0, 2), you subtract the y-values and divide by the difference in the x-values, resulting in a slope of -2.
Step-by-step explanation:
The question involves the calculation of the slope of a straight line between two points on a coordinate plane. The slope can be calculated by taking the difference in the y-values (rise) and dividing that by the difference in the x-values (run) between the two points.
To find the slope of the line that contains the points (-4, 10) and (0, 2), we use the formula:
slope (m) = (y2 - y1) / (x2 - x1)
Plugging in the points:
slope = (2 - 10) / (0 - (-4))
slope = (-8) / (4)
So, the slope is -2.
The error in a slope calculation setup can occur if the points are incorrectly identified or if the rise over run calculation is done incorrectly.