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Foundations 2 Spring 2024 Interim Assessment #1
#1 of 15 *
stanza, Carmen
This table shows a proportional relationship between
x and
y.

x

y

1
9

2
18

3
27

Find the constant of proportionality (
r ). Using the value for
r, select the correct equation in the form of
y=x.
A
y=9x
(B)
y=x+9
C.
y=x+2
(D)
y=2x

kernhigh.org bookmarks $\newline$ https://connect.kern. $\newline$ Foundations $2$ Spring $2024$ Interim Assessment \# $1$ $\newline$ \# $1$ of $15$ * $\newline$ stanza, Carmen $\newline$ This table shows a proportional relationship between $x$ and $y$ . $\newline$ \begin{tabular}{|c|c|} $\newline$ \hline $\boldsymbol{x}$ & $\boldsymbol{y}$ \\ $\newline$ \hline $1$ & $9$ \\ $\newline$ \hline $2$ & $18$ \\ $\newline$ \hline $3$ & $27$ \\ $\newline$ \hline $\newline$ \end{tabular} $\newline$ Find the constant of proportionality ( $r$ ). Using the value for $r$ , select the correct equation in the form of $y=x$ . $\newline$ A $y=9 x$ $\newline$ (B) $y=x+9$ $\newline$ C. $y=x+2$ $\newline$ (D) $y$ $0$

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Write equations of cosine functions using properties

Full solution

Q. kernhigh.org bookmarks

\newline

https://connect.kern.

\newline

Foundations

2

Spring

2024

Interim Assessment \#

1

\newline

\#

1

of

15

*

\newline

stanza, Carmen

\newline

This table shows a proportional relationship between

x

and

y

.

\newline

\begin{tabular}{|c|c|}

\newline

\hline

\boldsymbol{x}

&

\boldsymbol{y}

\\

\newline

\hline

1

&

9

\\

\newline

\hline

2

&

18

\\

\newline

\hline

3

&

27

\\

\newline

\hline

\newline

\end{tabular}

\newline

Find the constant of proportionality (

r

). Using the value for

r

, select the correct equation in the form of

y=x

.

\newline

A

y=9 x

\newline

(B)

y=x+9

\newline

C.

y=x+2

\newline

(D)

y

0

Look at the table: Look at the table, for $x=1$ , $y=9$ . The constant of proportionality $r$ is $y$ divided by $x$ . $r = \frac{y}{x} = \frac{9}{1} = 9$ .
Check values consistency: Check other values to confirm if $r$ is consistent. For $x=2$ , $y=18$ . $\newline$ $r = \frac{y}{x} = \frac{18}{2} = 9$ . It's the same, so $r$ is consistent.
Determine the equation: Now we know $r=9$ , the equation is $y=rx$ . So, the equation is $y=9x$ .

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