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What is the equation of the line that is parallel to the given line and has an [tex]\( x \)[/tex]-intercept of -3?

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

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

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

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

Sagot :

To find the equation of a line that is parallel to a given line and has a specific x-intercept, you need to follow these steps:

1. Identify the slope of the given line:
A line parallel to another will have the same slope. The equation given is [tex]\( y = \frac{2}{3} x + 3 \)[/tex]. The slope ([tex]\( m \)[/tex]) of this line is [tex]\( \frac{2}{3} \)[/tex].

2. Use the x-intercept to find the y-intercept of the new line:
You are given that the x-intercept of the new line is -37. The x-intercept is the point where the line crosses the x-axis, that is, ([tex]\(-37, 0\)[/tex]).

3. Apply the point-slope form to find the y-intercept [tex]\( b \)[/tex]:
The equation of any line can be written as [tex]\( y = mx + b \)[/tex]. Plugging in the slope [tex]\( m = \frac{2}{3} \)[/tex] and the x-intercept point ([tex]\(-37, 0\)[/tex]) into this equation will allow us to solve for [tex]\( b \)[/tex].

[tex]\[ 0 = \frac{2}{3}(-37) + b \][/tex]

Calculate [tex]\( \frac{2}{3}(-37) = -24.666666666666664 \)[/tex].

So we have:

[tex]\[ 0 = -24.666666666666664 + b \][/tex]

Solving for [tex]\( b \)[/tex]:

[tex]\[ b = 24.666666666666664 \][/tex]

4. Write the final equation:
Now that we have both the slope [tex]\( m = \frac{2}{3} \)[/tex] and the y-intercept [tex]\( b = 24.666666666666664 \)[/tex], you can write the equation of the line:

[tex]\[ y = \frac{2}{3}x - 24.666666666666664 \][/tex]

So the equation of the line that is parallel to the given line and has an x-intercept of -37 is:

[tex]\[ y = \frac{2}{3}x - 24.666666666666664 \][/tex]

Hence, none of the provided multiple choices matches the exact line equation we've found. However, the correct line equation remains as derived above.