IDNLearn.com is your go-to resource for finding expert answers and community support. Ask any question and get a detailed, reliable answer from our community of experts.
Sagot :
To write the point-slope form of the equation of a line that passes through the points [tex]\((-4, 7)\)[/tex] and [tex]\( (5, -3)\)[/tex], we need to follow these steps:
1. Find the slope (m) of the line: The slope [tex]\(m\)[/tex] is calculated using the formula:
[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Here, the points are [tex]\((x_1, y_1) = (-4, 7)\)[/tex] and [tex]\((x_2, y_2) = (5, -3)\)[/tex].
Plugging in the values, we get:
[tex]\[ m = \frac{-3 - 7}{5 + 4} = \frac{-10}{9} \][/tex]
2. Determine the point-slope form: The point-slope form of the equation of a line is given by:
[tex]\[ y - y_1 = m(x - x_1) \][/tex]
3. Substitute one of the points and the slope into the point-slope form:
We use the point [tex]\((-4, 7)\)[/tex] and the slope [tex]\(m = -\frac{10}{9}\)[/tex].
Substituting these values into the point-slope form, we have:
[tex]\[ y - 7 = -\frac{10}{9}(x - (-4)) \][/tex]
4. Simplify the equation:
Since [tex]\(x - (-4)\)[/tex] simplifies to [tex]\(x + 4\)[/tex], the equation becomes:
[tex]\[ y - 7 = -\frac{10}{9}(x + 4) \][/tex]
So, the point-slope form of the equation for the line passing through the points [tex]\((-4, 7)\)[/tex] and [tex]\((5, -3)\)[/tex] is:
[tex]\[ y - 7 = -\frac{10}{9}(x + 4) \][/tex]
Therefore, the correct answer is:
[tex]\[ \boxed{D} \][/tex]
1. Find the slope (m) of the line: The slope [tex]\(m\)[/tex] is calculated using the formula:
[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Here, the points are [tex]\((x_1, y_1) = (-4, 7)\)[/tex] and [tex]\((x_2, y_2) = (5, -3)\)[/tex].
Plugging in the values, we get:
[tex]\[ m = \frac{-3 - 7}{5 + 4} = \frac{-10}{9} \][/tex]
2. Determine the point-slope form: The point-slope form of the equation of a line is given by:
[tex]\[ y - y_1 = m(x - x_1) \][/tex]
3. Substitute one of the points and the slope into the point-slope form:
We use the point [tex]\((-4, 7)\)[/tex] and the slope [tex]\(m = -\frac{10}{9}\)[/tex].
Substituting these values into the point-slope form, we have:
[tex]\[ y - 7 = -\frac{10}{9}(x - (-4)) \][/tex]
4. Simplify the equation:
Since [tex]\(x - (-4)\)[/tex] simplifies to [tex]\(x + 4\)[/tex], the equation becomes:
[tex]\[ y - 7 = -\frac{10}{9}(x + 4) \][/tex]
So, the point-slope form of the equation for the line passing through the points [tex]\((-4, 7)\)[/tex] and [tex]\((5, -3)\)[/tex] is:
[tex]\[ y - 7 = -\frac{10}{9}(x + 4) \][/tex]
Therefore, the correct answer is:
[tex]\[ \boxed{D} \][/tex]
Thank you for contributing to our discussion. Don't forget to check back for new answers. Keep asking, answering, and sharing useful information. IDNLearn.com provides the answers you need. Thank you for visiting, and see you next time for more valuable insights.