Question

Juan created a survey to find a relationship between years of education and average yearly salary. The line of best fit on his scatter plot passes through the point (3, 1) and has a slope of 2. What is an equation for this line in point-slope form? A. y − 1 = 2(x − 3) B. y + 1 = 2(x + 3) C. y – 1 = 2(x + 3) D. y + 1 = 2(x – 3)

Answer 1

y - y₁ = m (x-x₁)

y - 1 = 2 ( x - 3 )

y - 1 = 2(x) - 2(3)

y - 1 = 2x - 6

take 2 as a common factor

y - 1 = 2 (x - 3)

the answer is A.