We have to use tho point from the table to get the slope and y-intercept.
(3, 14) and (4, 12)
Slope = (12 - 14) / (4 - 3) = -2 / 1 = -2
Now our equation looks like: y = -2x + b
Let's plug one of our points into the equation.
12 = -2(4) + b
Simplify
12 = -8 + b
Add 8 to both sides.
20 = b
The final answer is: y = -2x + 20
