Question

What is the equation of a trend line that passes through the points (7,450) and (14,401).

Answer 1

y = -7x + 499

Explanation:

Slope-Intercept Form: y = mx + b

Slope Formula:
`m = (y_2-y_1)/(x_2-x_1)`

Step 1: Find slope m

m = (401 - 450)/(14 - 7)

m = -49/7

m = -7

y = -7x + b

Step 2: Find b

450 = -7(7) + b

450 = -49 + b

499 = b

Step 3: Rewrite equation

y = -7x + 499