Answer:
Y=15x
Step-by-step explanation:
<h2>Okay so let's approach this problem!</h2><h2 />
X is books and Y is total cost
Let's find the slope!
Y2-Y1/ X2-X1
Just replace


The slope is 15

Now replace x and y with coordinates and solve

The final equation:
y = 15x
That's it! If you have any questions please ask! Brainliest Appreciated.
Answer:
Perpendicular lines.
Step-by-step explanation:
They are called perpendicular lines.
If the slope of one line is m them the slope of the other is -1/m.
(2308*10)/100=230.3 so he would have to pay 230 hundos (and 30 singles)
Can help me plzzzzzz...!!!! f) i) dont need
Answer:
(ii) 
(iii) 
Step-by-step explanation:
Please see the attached picture for full solution.