Answer:
Y=15x
Step-by-step explanation:
Okay so let's approach this problem!
X is books and Y is total cost
Let's find the slope!
Y2-Y1/ X2-X1
Just replace
[tex] \frac{150 - 90}{10 - 6} [/tex]
[tex] \frac{60}{4} = 15[/tex]
The slope is 15
[tex]y = 15x + b [/tex]
Now replace x and y with coordinates and solve
[tex]150 = 15(10) + b \\ 150 = 150 + b \\ - 150 \\ 0 = b[/tex]
The final equation:
y = 15x
That's it! If you have any questions please ask! Brainliest Appreciated.
