A line has a y-intercept of 5 and is parallel to the line represented by the equation 2x + 3y = 9. Which of the following equations represents the line?
Question
A line has a y-intercept of 5 and is parallel to the line represented by the equation 2x + 3y = 9. What is the equation that represents the line?
Solution
First, we need to find the slope of the given line. The equation of the line is in the form of Ax + By = C. We can convert it to the slope-intercept form (y = mx + b) to easily find the slope.
The given equation is 2x + 3y = 9. Let's isolate y:
3y = -2x + 9 y = (-2/3)x + 3
So, the slope (m) of the given line is -2/3.
Since parallel lines have the same slope, the line we're looking for also has a slope of -2/3.
We're also told that the y-intercept (b) of the line we're looking for is 5.
So, the equation of the line we're looking for, in slope-intercept form, is:
y = (-2/3)x + 5
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