\[\boxed{\text{966\ (966).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ y = 0:\ \ \]
\[7 \cdot 0 - 3x = 21\ \]
\[- 3x = 21\ \]
\[x = - 7 \Longrightarrow \ \ ( - 7;0).\]
\[2)\ x = 0:\ \ \]
\[7y - 3 \cdot 0 = 21\]
\[7y = 21\ \]
\[y = 3 \Longrightarrow (0;3)\]
\[\boxed{\text{966.\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ m = 100 + 20t\]
\[2)\]
\[t\] | \[0\] | \[1\] | \[2\] | \[3\] |
---|---|---|---|---|
\[m\] | \[100\] | \[120\] | \[140\] | \[160\] |