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what is an equation of the line that passes through the point (-2, -3) and is perpindicular to the line x+3y=24

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Answer:

The equation of the line that passes through the point (-2, -3) and is perpendicular to the line will be:


  • y=3x+3

Explanation:

Given the line


x+3y=24

The slope-intercept form


y = mx+b

where m is the slope and b is the y-intercept

Writing the line equation in the slope-intercept form


x+3y=24


y=-(1)/(3)x+8

Thus, the slope = m = -1/3

We know that a line perpendicular to another line contains a slope that is the negative reciprocal of the slope of the other line, such as:

slope = m = -1/3

perpendicular slope = – 1/m


=-(1)/(-(1)/(3))=3

Using the point-slope of the line equation


y-y_1=m\left(x-x_1\right)

substituting perpendicular slope = 3 and (x₁, y₁) = (-2, -3)


y-\left(-3\right)=3\left(x-\left(-2\right)\right)


y+3=3\left(x+2\right)

subtract 3 from both sides


y+3-3=3\left(x+2\right)-3


y=3x+3

Therefore, the equation of the line that passes through the point (-2, -3) and is perpendicular to the line will be:


  • y=3x+3
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