Question

Please help , Taking the test

The graph below shows the line of best fit for data collected on the depth, in feet, and velocity, in feet per second, at ten points along the Columbia River.



Which of the following is the equation of the line of best fit?

y = -0.15x + 0.15
y = -6.67x + 2.1
y = -6.67x + 13
y = -0.15x + 1.95

Answer 1

The correct Option is (D) y = -0.15x + 1.95

Answer 2

The correct Option is (D) y = -0.15x + 1.95

Step-by-step explanation:
The linear (line) equation is:
y = mx + c

Where
m = slope = rise/run = -0.3/2 = -0.15 (negative sign indicates the downward slope)
c = y-intercept = 1.95 (in graph)

Plug in the values in line equation:
y = -0.15x + 1.95 (Option D)