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4. What is the slope of the line through the points [tex]$(-4, 6)$[/tex] and [tex]$(-3, -1)$[/tex]?

A. [tex]-\frac{1}{2}[/tex]
B. [tex]-\frac{7}{1}[/tex]
C. [tex]-\frac{2}{1}[/tex]
D. [tex]-\frac{1}{7}[/tex]


Sagot :

Absolutely! Let's find the slope of the line that passes through the points [tex]\((-4, 6)\)[/tex] and [tex]\((-3, -1)\)[/tex].

The formula to calculate the slope [tex]\( m \)[/tex] of a line passing through two points [tex]\((x_1, y_1)\)[/tex] and [tex]\((x_2, y_2)\)[/tex] is:

[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]

Given the points [tex]\((-4, 6)\)[/tex] and [tex]\((-3, -1)\)[/tex], let's assign:
- [tex]\( x_1 = -4 \)[/tex]
- [tex]\( y_1 = 6 \)[/tex]
- [tex]\( x_2 = -3 \)[/tex]
- [tex]\( y_2 = -1 \)[/tex]

Substitute these values into the slope formula:

[tex]\[ m = \frac{-1 - 6}{-3 - (-4)} \][/tex]

Now, simplify the numerator and the denominator:

[tex]\[ m = \frac{-1 - 6}{-3 + 4} \][/tex]
[tex]\[ m = \frac{-7}{1} \][/tex]

So, the slope [tex]\( m \)[/tex] of the line through the points [tex]\((-4, 6)\)[/tex] and [tex]\((-3, -1)\)[/tex] is:

[tex]\[ m = -7 \][/tex]

Therefore, the correct answer is:

[tex]\[ -\frac{7}{1} \][/tex]