Question

Free Medal If you answer

Manuel builds and sells wooden crates. He made a table to show how much his crates cost.

Which equation represents the situation?

Manuel’s Crates
Crates
2 4 6 8
Cost 25 45 65 85


A.
y – 2 = −10(x – 25)

B.
y – 4 = 10(x – 45)

C.
y – 65 = −10(x – 6)

D.
y – 85 = 10(x – 8)

Answer 1

@jdoe0001 you know how to solve this?

Answer 2

well... I'd think is just a matter of finding the slope

have you covered slopes yet?

Answer 3

yes but I didn't really...understand it

Answer 4

ok one sec

Answer 5

If you could just tell me the answer then that will be enough, we're going over it in class 2morrow I just need to have it done

Answer 6

\(\bf \begin{array}{llll}
crates&cost
\\\hline\\
2&25\\
{\color{red}{ 4}}&{\color{blue}{ 45}}\\
6&65\\
{\color{red}{ 8}}&{\color{blue}{ 85}}
\end{array}
\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
&({\color{red}{ 4}}\quad ,&{\color{blue}{ 45}})\quad &({\color{red}{ 8}}\quad ,&{\color{blue}{ 85}})
\end{array}
\\\quad \\

slope = {\color{green}{ m}}= \cfrac{rise}{run} \implies \cfrac{{\color{blue}{ y_2}}-{\color{blue}{ y_1}}}{{\color{red}{ x_2}}-{\color{red}{ x_1}}}
\\ \quad \\

y-{\color{blue}{ y_1}}={\color{green}{ m}}(x-{\color{red}{ x_1}})\qquad \textit{plug in the values and solve for "y"}\\
\qquad \uparrow\\
\textit{point-slope form}\)

Answer 7

hmmm the choices area in point-slope intercept form... so you don't really need to solve for "y" anyway

Answer 8

So is it a b c d

Answer 9

I really need to pass this

Answer 10

the idea behind tests is not to have them finished
is to understand the material
otherwise the meaning behind the test is lost

Answer 11

Well...

Answer 12

I guess I'll be moving on :c

Answer 13

@thunndernova308 what is the answer

Answer 14

or @jdoe0001

Answer 15

I think D because if you take the point 2,25, and put it in the spots it comes out to be -60=-60

Answer 16

yep...it was d, I took this :D

Answer 17

thanks for the random medal person XD @UniqueFreak XD