Complete the point-slope equation of the line through [tex]\((-5,7)\)[/tex] and [tex]\((-4,0)\)[/tex]. Use exact numbers.

[tex]\[ y - 7 = \square \][/tex]



Answer :

To determine the point-slope equation of the line passing through the points [tex]\((-5, 7)\)[/tex] and [tex]\((-4, 0)\)[/tex], we'll follow these steps:

1. Identify the coordinates of the points:
[tex]\[ (x_1, y_1) = (-5, 7) \][/tex]
[tex]\[ (x_2, y_2) = (-4, 0) \][/tex]

2. Calculate the slope [tex]\( m \)[/tex] of the line:
The formula for the slope between two points [tex]\((x_1, y_1)\)[/tex] and [tex]\((x_2, y_2)\)[/tex] is given by:
[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Substituting the given coordinates:
[tex]\[ m = \frac{0 - 7}{-4 - (-5)} = \frac{-7}{-4 + 5} = \frac{-7}{1} = -7 \][/tex]

3. Use the point-slope form of the equation of a line:
The point-slope form is written as:
[tex]\[ y - y_1 = m(x - x_1) \][/tex]
Substituting [tex]\( m = -7 \)[/tex], [tex]\( x_1 = -5 \)[/tex], and [tex]\( y_1 = 7 \)[/tex]:
[tex]\[ y - 7 = -7(x + 5) \][/tex]
Here, we adjust the expression inside the parentheses to account for [tex]\( x_1 = -5 \)[/tex]:
[tex]\[ x - (-5) = x + 5 \][/tex]

Thus, the point-slope equation of the line through [tex]\((-5, 7)\)[/tex] and [tex]\((-4, 0)\)[/tex] is:

[tex]\[ y - 7 = -7(x + 5) \][/tex]