Questions: Write the equation of this line in slope-intercept form.
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Transcript text: Write the equation of this line in slope-intercept form.
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Solution
Solution Steps
Step 1: Find two points on the line
We can choose the points (-2, 1) and (0, -3).
Step 2: Calculate the slope
The slope is given by the formula:
$$m = \frac{y_2 - y_1}{x_2 - x_1}$$
Substituting the points (-2, 1) and (0, -3) into the formula, we get:
$$m = \frac{-3 - 1}{0 - (-2)} = \frac{-4}{2} = -2$$
Step 3: Determine the y-intercept
The y-intercept is the point where the line crosses the y-axis. In this case, the line crosses the y-axis at the point (0, -3), so the y-intercept is -3.
Step 4: Write the equation in slope-intercept form
The slope-intercept form of a linear equation is given by:
$$y = mx + b$$
where _m_ is the slope and _b_ is the y-intercept.
In our case, the slope _m_ is -2 and the y-intercept _b_ is -3. Substituting these values into the equation, we get: