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Sagot :
To find the slope [tex]\( m \)[/tex] of a line that intersects the points [tex]\((2,2)\)[/tex] and [tex]\((-1,20)\)[/tex], we use the slope formula:
[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Here, [tex]\((x_1, y_1)\)[/tex] are the coordinates of the first point, [tex]\((2, 2)\)[/tex], and [tex]\((x_2, y_2)\)[/tex] are the coordinates of the second point, [tex]\((-1, 20)\)[/tex].
Let's assign the coordinates to the respective variables:
- [tex]\( x_1 = 2 \)[/tex]
- [tex]\( y_1 = 2 \)[/tex]
- [tex]\( x_2 = -1 \)[/tex]
- [tex]\( y_2 = 20 \)[/tex]
Now, substitute these values into the slope formula:
[tex]\[ m = \frac{20 - 2}{-1 - 2} \][/tex]
Calculate the difference in the y-coordinates:
[tex]\[ 20 - 2 = 18 \][/tex]
Calculate the difference in the x-coordinates:
[tex]\[ -1 - 2 = -3 \][/tex]
Now, substitute these differences back into the slope formula:
[tex]\[ m = \frac{18}{-3} \][/tex]
Perform the division:
[tex]\[ m = -6 \][/tex]
Thus, the slope of the line in simplest form is:
[tex]\[ m = -6 \][/tex]
[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Here, [tex]\((x_1, y_1)\)[/tex] are the coordinates of the first point, [tex]\((2, 2)\)[/tex], and [tex]\((x_2, y_2)\)[/tex] are the coordinates of the second point, [tex]\((-1, 20)\)[/tex].
Let's assign the coordinates to the respective variables:
- [tex]\( x_1 = 2 \)[/tex]
- [tex]\( y_1 = 2 \)[/tex]
- [tex]\( x_2 = -1 \)[/tex]
- [tex]\( y_2 = 20 \)[/tex]
Now, substitute these values into the slope formula:
[tex]\[ m = \frac{20 - 2}{-1 - 2} \][/tex]
Calculate the difference in the y-coordinates:
[tex]\[ 20 - 2 = 18 \][/tex]
Calculate the difference in the x-coordinates:
[tex]\[ -1 - 2 = -3 \][/tex]
Now, substitute these differences back into the slope formula:
[tex]\[ m = \frac{18}{-3} \][/tex]
Perform the division:
[tex]\[ m = -6 \][/tex]
Thus, the slope of the line in simplest form is:
[tex]\[ m = -6 \][/tex]
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