I’d try a calculator, are you trying to simply?
D = √( (x₂ -x₁)² + (y₂ - y₁)²)
x₁ = 10, y₁ = -9, x₂ = 8, y₂ = 7
d = √( (x₂ -x₁)² + (y₂ - y₁)²)
d = √( (8 - 10)² + (7 - -9)²)
d = √( (-2)² + (7+9)²)
d = √( (-2)² + (16)²)
d = √(4 + 256)
d = √260 Use a calculator
d ≈ 16.1245
d ≈ 16.12 units to the nearest hundredth.
Option D.
A line of best fit is a straight line drawn through the center of a group of data points plotted on a scatter plot. The line of best fit shows whether these two variables appear to be correlated and can be used to help identify trends occurring within the dataset.