Which equation represents a line that passes through [tex]$(5,1)$[/tex] and has a slope of [tex]$\frac{1}{2}$[/tex]?

A. [tex]y-5=\frac{1}{2}(x-1)[/tex]
B. [tex]y-\frac{1}{2}=5(x-1)[/tex]
C. [tex]y-1=\frac{1}{2}(x-5)[/tex]
D. [tex]y-1=5\left(x-\frac{1}{2}\right)[/tex]



Answer :

To determine which equation represents a line passing through the point [tex]\((5, 1)\)[/tex] with a slope of [tex]\(\frac{1}{2}\)[/tex], we should use the point-slope form of the equation of a line. The point-slope form is:

[tex]\[ y - y_1 = m(x - x_1) \][/tex]

where [tex]\((x_1, y_1)\)[/tex] is a point on the line and [tex]\(m\)[/tex] is the slope.

Given:
- the point [tex]\((5, 1)\)[/tex] means [tex]\(x_1 = 5\)[/tex] and [tex]\(y_1 = 1\)[/tex]
- the slope [tex]\(m = \frac{1}{2}\)[/tex]

We substitute these values into the point-slope form equation:

[tex]\[ y - 1 = \frac{1}{2}(x - 5) \][/tex]

Therefore, the equation of the line that passes through the point [tex]\((5, 1)\)[/tex] and has a slope of [tex]\(\frac{1}{2}\)[/tex] is:

[tex]\[ y - 1 = \frac{1}{2}(x - 5) \][/tex]

Thus, the correct option is:

[tex]\[ y - 1 = \frac{1}{2}(x - 5) \][/tex]

This matches with the third option:

[tex]\[ y - 1 = \frac{1}{2}(x - 5) \][/tex]