Uncover valuable information and solutions with IDNLearn.com's extensive Q&A platform. Get the information you need from our community of experts who provide accurate and comprehensive answers to all your questions.

What is the equation of the line that is parallel to the line [tex]5x + 2y = 12[/tex] and passes through the point [tex](-2, 4)[/tex]?

A. [tex]y = -\frac{5}{2}x - 1[/tex]

B. [tex]y = -\frac{5}{2}x + 5[/tex]

C. [tex]y = \frac{2}{5}x - 1[/tex]

D. [tex]y = \frac{2}{5}x + 5[/tex]


Sagot :

To find the equation of the line that is parallel to the given line and passes through a specific point, we can follow these steps:

1. Identify the slope of the given line: The given line is \(5x + 2y = 12\). We need to find its slope. To do this, we convert it to slope-intercept form \(y = mx + b\) where \(m\) is the slope.

Let's rewrite the line equation \(5x + 2y = 12\) in slope-intercept form:
[tex]\[ 2y = -5x + 12 \][/tex]
[tex]\[ y = -\frac{5}{2}x + 6 \][/tex]
From this, we see that the slope \(m\) of the given line is \(-\frac{5}{2}\).

2. Determine the slope of the parallel line: Since parallel lines have the same slope, the slope of our new line will also be \(-\frac{5}{2}\).

3. Use the point-slope form of the line equation: We know the slope and a point \((-2, 4)\) through which the line passes. The point-slope form of a line is:
[tex]\[ y - y_1 = m(x - x_1) \][/tex]
Substituting \(m = -\frac{5}{2}\), \(x_1 = -2\), and \(y_1 = 4\) into the point-slope form:
[tex]\[ y - 4 = -\frac{5}{2}(x - (-2)) \][/tex]
Simplify:
[tex]\[ y - 4 = -\frac{5}{2}(x + 2) \][/tex]
[tex]\[ y - 4 = -\frac{5}{2}x - 5 \][/tex]
[tex]\[ y = -\frac{5}{2}x - 1 \][/tex]

So, the equation of the line that is parallel to \(5x + 2y = 12\) and passes through the point \((-2, 4)\) is:
[tex]\[ y = -\frac{5}{2}x - 1 \][/tex]

Hence, the correct answer is:
[tex]\[y=-\frac{5}{2} x-1\][/tex]