Part (a)
<h3>Answer: y1 and y3 are perpendicular</h3>
This is because the two slopes 2 and -1/2 multiply to -1. Perpendicular slopes multiply to -1 assuming neither line is vertical or horizontal.
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Part (b)
Graph each line to see where they cross. The three points of intersection are
(0,4)
(2,-2)
(4,2)
The order of the points doesn't matter.
You could also form three systems of equations pairing up the equations, and solving each system. That way you can find the points of intersection. Graphing may be a better and faster route in my opinion. See the diagram below.
f(x) = 5x is linear. Just a straight line with a slope of +5. So if the intervals are both a difference of 1, then the average rate of change will be the same.
f(x2) - f(x1) over x2 - x1. That's the formula for average rate of change.
So for Section A:
f(x) = 5x, (0,1)
[f(1) - f(0)]/(1-0)
= [5(1) - 5(0)]/1
=(5)/1
=5
Do the same for section B and you'll get 5 as well.
I hope this helps you because I have no clue if my answer is right
Answer:
Option a
Step-by-step explanation:
Given that Seth just opened a checking account. His account includes an ATM card.
With ATM card
d) he can withdraw money from any ATM centre provided sufficient balance is kept in his checking account
b) he can deposit money for fixed denominations normally in multiples of 100 in the ATM centre with ATM card
c) he can give the card with pin in any shop to purchase an item instead of paying cash.
Hence b,c,d are not right answers.
a) transfer money is not possible using ATM card.
Only with netbanking transfer of money is possible
Option a is right answer
Add $20 and $60 and your answer which is $80 dividdd that by 1.
