The problem asks to find the equation of a line that is perpendicular to the line $2x + 3y = 5$ and passes through the point $(-2, -3)$.

GeometryLinear EquationsPerpendicular LinesSlopePoint-Slope Form
2025/4/30

1. Problem Description

The problem asks to find the equation of a line that is perpendicular to the line 2x+3y=52x + 3y = 5 and passes through the point (2,3)(-2, -3).

2. Solution Steps

First, we need to find the slope of the given line 2x+3y=52x + 3y = 5. We can rewrite this equation in slope-intercept form, which is y=mx+by = mx + b, where mm is the slope and bb is the y-intercept.
3y=2x+53y = -2x + 5
y=23x+53y = -\frac{2}{3}x + \frac{5}{3}
So, the slope of the given line is m1=23m_1 = -\frac{2}{3}.
Next, we need to find the slope of the line perpendicular to the given line. The slopes of perpendicular lines are negative reciprocals of each other. If m1m_1 is the slope of the first line and m2m_2 is the slope of the perpendicular line, then m1m2=1m_1 \cdot m_2 = -1.
m2=1m1=123=32m_2 = -\frac{1}{m_1} = -\frac{1}{-\frac{2}{3}} = \frac{3}{2}
So, the slope of the perpendicular line is m2=32m_2 = \frac{3}{2}.
Now we have the slope of the perpendicular line and a point (2,3)(-2, -3) that it passes through. We can use the point-slope form of a line equation, which is yy1=m(xx1)y - y_1 = m(x - x_1), where (x1,y1)(x_1, y_1) is the given point and mm is the slope.
y(3)=32(x(2))y - (-3) = \frac{3}{2}(x - (-2))
y+3=32(x+2)y + 3 = \frac{3}{2}(x + 2)
y+3=32x+3y + 3 = \frac{3}{2}x + 3
y=32xy = \frac{3}{2}x
Finally, we can rewrite the equation in the standard form Ax+By=CAx + By = C.
y=32xy = \frac{3}{2}x
2y=3x2y = 3x
3x+2y=0-3x + 2y = 0
3x2y=03x - 2y = 0

3. Final Answer

The equation of the line perpendicular to 2x+3y=52x + 3y = 5 and passing through (2,3)(-2, -3) is y=32xy = \frac{3}{2}x or 3x2y=03x-2y=0.

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