1) To find the slope between a pair of points, use the slope formula: .
and represent the x and y values of one point the line passes through. and represent the x and y values of another point the line also passes through. We know the line passes through (-4,5) and (0,2). So, substitute their x and y values for the formula (following the appropriate order) and solve:
B. <span>The independent variable is the amount of sugar dissolved, and the dependent variable is the temperature of the water. Hope this helps. </span>