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Airida [17]
3 years ago
5

Write the equation of the line perpendicular to 2x+3y=9 that passes through (-2,5). Write your answer in slope-intercept form.

Mathematics
1 answer:
kaheart [24]3 years ago
5 0

Answer:

y = \frac{3}{2} x + 8

Step-by-step explanation:

the equation of a line in slope intercept form is

y = mx + c ( m is the slope and c the y-intercept )

rearrange 2x + 3y = 9 into this form

subtract 2x from both sides

3y = - 2x + 9 ( divide all terms by 3 )

y = - \frac{2}{3} x + 3 ← in slope-intercept form

with slope m = - \frac{2}{3}

given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = -\frac{1}{-2/3} = \frac{3}{2}, hence

y = \frac{3}{2} x + c ← is the partial equation

to find c substitute (- 2, 5) into the partial equation

5 = - 3 + c ⇒ c = 5 + 3 = 8

y = \frac{3}{2} x + 8 ← equation of perpendicular line


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