QUESTION IMAGE
Question
the table below represents a linear function. identify the rate of change of the function.
| x | y |
| -4 | 4 |
| 0 | -3 |
| 4 | -10 |
| 8 | -17 |
Step1: Recall rate of change formula
The rate of change (slope) of a linear function between two points $(x_1,y_1)$ and $(x_2,y_2)$ is $\frac{y_2 - y_1}{x_2 - x_1}$.
Step2: Select two points from table
Choose $(x_1,y_1)=(-4,4)$ and $(x_2,y_2)=(0,-3)$.
Step3: Substitute into slope formula
$\frac{-3 - 4}{0 - (-4)} = \frac{-7}{4}$
Step4: Verify with another pair
Use $(x_1,y_1)=(0,-3)$ and $(x_2,y_2)=(4,-10)$:
$\frac{-10 - (-3)}{4 - 0} = \frac{-7}{4}$
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$\frac{-7}{4}$