Question

if you know two points on a line, how can you find the right the rate of change of the variables being graphed?

Answer 1

The rate of change is the slope of a line. The slope of the line can be calculated using the formula
`(y_(2)-y_(1)  )/(x_(2)-x_(1)  )`. To find the slope of a line using this formula, it is necessary to know two of the points on the line.