Question

Yurly and his brother Anduray are each mailing a birthday gift to a friend. Yuriy's package weighs one lesspound than three times the weight of Anduray's package. The combined weight of both packages is 7pounds.Part 3: Yuriy and Anduray each graph the system that represents this situation. Who is correct? Explain why.

Answer 1

Answer:

Yuriy

Explanations:$\begin{gathered} \text{Let the weight of Yuriy's package be w}_y \\ \text{Let the weight of Anduray's package be w}_a \end{gathered}$

Yuriy's package weighs one less pound than three times the weight of Anduray's package.

$w_y=3w_a-1$

The combined weight of both packages is 7 pounds

$w_y+\text{ }w_a=\text{ 7}$

The graph representing the two equations is: