1.5 Study the water tariff below of a certain municipality. The following tariffs were used to determine the amount payable for month of October.
CATEGORIES RANGE
Price per kl (VAT excluded)
1
0-12 kl
Explain what is meant by break even point?
R0, 00
2
13kl- 28 kl R7.96
3
29 kl - 60 kl R13.55
4
More than 60 R16,80
kl
How much will a person staying in the municipality pay if 82 klis used include VAT?
QUESTION 2
Grade 12 learners from Mollo High School are selling apples during lunch to raise funds for
their matric farewell function. They have asked the principal to use the school tuck-shop. They
bought a crate for R255,00. They sold them at R3.00 each.
2.1.1
2.1.2
Explain what is meant by Break-even point?
Calculate the profit they made, if 116 apples were sold
If they made a profit of R120 per day, how many;
2131 annies were sold per day?
2.1.3

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

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step-by-step explanation:

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