Westonci.ca is your go-to source for answers, with a community ready to provide accurate and timely information. Ask your questions and receive accurate answers from professionals with extensive experience in various fields on our platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

A line passes through the point [tex]$(2,3)$[/tex] and has a slope of [tex]-6[/tex]. Write an equation in slope-intercept form for this line.

Sagot :

To find the equation of the line passing through the point [tex]\((2, 3)\)[/tex] with a slope of [tex]\(-6\)[/tex], we use the slope-intercept form of a line, which is given by:

[tex]\[ y = mx + b \][/tex]

Here, [tex]\(m\)[/tex] represents the slope and [tex]\(b\)[/tex] is the y-intercept.

Steps to find the equation:

1. Identify the slope ([tex]\(m\)[/tex]): The slope of the line is given as [tex]\(-6\)[/tex].
2. Identify a point on the line [tex]\((x_1, y_1)\)[/tex]: The point given is [tex]\((2, 3)\)[/tex].
3. Substitute the point and slope into the slope-intercept equation: We know the point [tex]\((x_1, y_1)\)[/tex] satisfies the equation of the line. Therefore, we can substitute [tex]\(x_1 = 2\)[/tex], [tex]\(y_1 = 3\)[/tex], and [tex]\(m = -6\)[/tex] into the equation to find [tex]\(b\)[/tex], the y-intercept.

[tex]\[ y_1 = mx_1 + b \][/tex]
[tex]\[ 3 = -6(2) + b \][/tex]
[tex]\[ 3 = -12 + b \][/tex]

4. Solve for [tex]\(b\)[/tex] (the y-intercept):

[tex]\[ 3 = -12 + b \][/tex]
[tex]\[ b = 3 + 12 \][/tex]
[tex]\[ b = 15 \][/tex]

5. Write the equation: Now that we have the slope ([tex]\(m\)[/tex]) and the y-intercept ([tex]\(b\)[/tex]), we can write the equation of the line:

[tex]\[ y = mx + b \][/tex]
[tex]\[ y = -6x + 15 \][/tex]

Thus, the equation in slope-intercept form for the line that passes through the point [tex]\((2, 3)\)[/tex] and has a slope of [tex]\(-6\)[/tex] is:

[tex]\[ y = -6x + 15 \][/tex]