Answer:
∠ADC and ∠EDG are vertical angles
We have the Y-Intercept and the X-Intercept
The Y-Intercept implies that the X variable is set to zero and the X-Intercept implies that the Y variable is set to zero when solving equations of a line.
Step-by-step explanation:
By the formula of slope, we have

Answer:
is your average rate of change,
Step-by-step explanation:
average rate of change is
, by slope formula
simplify this to get
, which is the definition of the derivative as h goes to 0

since you defined x=a, we can substitute a for x and vice versa to find our derivative.

simplifying
(your average rate of change)