#### Answer

Independent variable: number of tricks
Dependent variable: number of biscuits
The relationship represents the amount of treats, from a box, a dog gets for doing tricks
Equation: y=-3x+23

#### Work Step by Step

Number of tricks is independent variable because it lies on the x-axis
Number of biscuits is dependent variable because it lies on the y-axis
Equation:
Slope: $\frac{(y_{2}-y_{1})}{(x_{2}-x_{1})}$
$\frac{(14-17)}{3-2)}$
$\frac{-3}{1}$
slope=-3
y-int: y=-3x+b (substitute any x & y value from the table)
17=-3(2)+b
17=-6+b
+6 +6
23=b
Equation: y=-3x+23