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what is an equation of the line that is perpendicular to y-3=-4(x+2) and passes through the point (-5,7)

User Chimere
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2 Answers

4 votes

Final answer:

The equation of the line that is perpendicular to y-3=-4(x+2) and passes through (-5,7) is y = ¼x + 7.25.

Step-by-step explanation:

To find an equation of the line that is perpendicular to y - 3 = -4(x + 2) and passes through the point (-5,7), we need to determine the slope of the original line and then find the perpendicular slope. The original slope is -4. A perpendicular line would have the reciprocal positive slope, which is ¼. Using the slope-intercept form y = mx + b and the given point to solve for b, we plug in the coordinates of the point to get 7 = ¼(-5) + b. Solving for b, we find that it equals 7 + ⅔ = 7.25. The equation of the perpendicular line is therefore y = ¼x + 7.25.

User Yanchi
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6.7k points
3 votes

Answer:remember that perpendicular lines have slopes that multiply to -1

y-y_1=m(x-x_1) is point-slope form

in point-slope form, it passes through the point (x_1,y_1) and has a slope of m

we want to find the equaiton of the line that is perpendicular to y-3=-4(x+2) and passes through (-5,7)

we need the slope

y-3=-4(x+2)

the slope is -4, but we want perpendicular so

-4 times what=-1?

divide both sides by -4

what=1/4

so the slope of our mystery line is 1/4 and it passe through (-5,7)

so we can write in point slope form as y-7=\frac{1}{4}(x-(-5)) or y-7=\frac{1}{4}(x+5)

the equation is y-7=\frac{1}{4}(x+5)

Step-by-step explanation:

act like it's a fraction you multiply the top number by the bottom number (numerator and the denominator)and then the other but it is keep change flip the same way with the first numbers

User Tassock
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