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What is the slope of the line with equation [tex]y-3=-\frac{1}{2}(x-2)[/tex]?

A. [tex]\(-2\)[/tex]
B. [tex]\(-\frac{1}{2}\)[/tex]

Sagot :

To find the slope of the line given by the equation [tex]\( y - 3 = -\frac{1}{2}(x - 2) \)[/tex], let's write this equation in the slope-intercept form, [tex]\( y = mx + b \)[/tex], where [tex]\( m \)[/tex] represents the slope.

The given equation is [tex]\( y - 3 = -\frac{1}{2}(x - 2) \)[/tex].

1. Distribute the slope on the right-hand side:

[tex]\( y - 3 = -\frac{1}{2} \cdot x - \frac{1}{2} \cdot (-2) \)[/tex]

Simplify inside the parentheses:

[tex]\( y - 3 = -\frac{1}{2}x + 1 \)[/tex]

2. Isolate [tex]\( y \)[/tex] by adding 3 to both sides:

[tex]\( y = -\frac{1}{2}x + 1 + 3 \)[/tex]

3. Combine like terms on the right-hand side:

[tex]\( y = -\frac{1}{2}x + 4 \)[/tex]

Now the equation is in slope-intercept form [tex]\( y = mx + b \)[/tex], where [tex]\( m = -\frac{1}{2} \)[/tex] and [tex]\( b = 4 \)[/tex].

Therefore, the slope of the line is [tex]\( -\frac{1}{2} \)[/tex].

So, the correct answer is:
[tex]\( -\frac{1}{2} \)[/tex].