Question

Write an equation of each line. Express your answer using either the general form or the slope–intercept form of the equation of a line, whichever you prefer.

Short answer

The equation of line is:$y=-\frac{1}{2}x-1$

Step-by-step solution

Step 1. Given information 

Graph of line is:

Step 2. Finding slope of the line. 

The two points on the line are: $(-2,0)\mathrm{and}(0,-1)$

Slope of the line is given by,

$$\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ \Rightarrow m=\frac{-1-0}{0-(-2)} \\ \Rightarrow m=-\frac{1}{2} \end{gathered}$$

Step 3. Finding y-intercept of the line. 

From the graph, y-intercept,$b=-1$

Step 4. Finding equation of the line

Slope-intercept form of the line is: $y=mx+b$

Substituting slope and y-intercept in the equation above, we get,$y=-\frac{1}{2}x-1$