Question

Write an equation in slope intercept form of the line that passes through (4, 1) and (5, -1).
Answer

y = -4x + 1

y = -1/2 x + 9

y = 4x + 1

y = -2x + 9
1 points
Question 8

Write an equation of the line that passes through (8, 3) and (4, 3).
Answer

y = 3

y = 4x + 3

y = 4

y = 3x

Answer 1

\(\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
&(4\quad ,&1)\quad &(5\quad ,&-1)
\end{array}
\\\quad \\

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

y-y_1=m(x-x_1)\qquad \textit{plug in your values and solve for "y"}\)

\(\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
&(8\quad ,&3)\quad &(4\quad ,&3)
\end{array}
\\\quad \\

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

y-y_1=m(x-x_1)\qquad \textit{plug in your values and solve for "y"}\)