Answer:
Step-by-step explanation:
I think the first part of that is asking for the equation for the line of symmetry, although I do not have access to your drop down menu to know for sure! The axis of symmetry is the equation that splits the parabola into 2 parts that are mirror images of each other. In this type of parabola, it will be an "x = " equation. The line that splits the parabola in half is the line x = -2. The function is increasing where the y values are going up. This happens in the interval (-∞, -2].
The function is decreasing where the y values are going down. This happens in the interval [-2, ∞)
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Answer:
I believe the correct answer is A.
Step-by-step explanation:
If we were to make a list of the amount of money in Jobie's piggy bank at the end of each month (including the amount she started with), the first number in the list would have to be $325, which means that a1 is equal to 325. So we can rule out choices C and D.
When reading the problem, notice that it states that she <u><em>ADDS</em></u> $10 a month. This means that the model will have to be an addition based function. This rules out answer choice B, leaving us with choice A as the the answer.
I hope this helps!
Part A:
The given values in form of ordered pairs are:
(2,1), (3,1), (4,-3), (3,-3)
A relation can be a function if one value of x is paired with exactly one value of y. In this case, x value of 3 is paired with two y values 1 and -3. So this relation is not a function.
Part B:
f(h) = 15h + 5
f(8) can be found by substituting h=8 in above equation.
So,
f(8) = 15(8) + 5 = 125
h represents the number of hours and f(h) represents the earnings of Kylie. So f(8) shows that Kylie earned $125 from 8 hours of work in the cafe
Part C:
For r hours of work, we can write:
f(r) = 15r + 5
So, the ordered pair can represent this relation as:
(r, f(r))
or
(r, 15r+5)
