SOLUTION: Which of these is the equation for a line tangent to the circle x2 + y2 = 20 at point (2, -4)?
y = ½x – 5
y = 2x – 5
y = 2x + √20
y = ½x + √20
Algebra.Com
Question 1080217: Which of these is the equation for a line tangent to the circle x2 + y2 = 20 at point (2, -4)?
y = ½x – 5
y = 2x – 5
y = 2x + √20
y = ½x + √20
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
y+5=(1/2)x
RELATED QUESTIONS
Which of these is the equation for a line tangent to the circle x^2 + y^2 = 20 at point... (answered by Fombitz)
Write the equation of the line that is tangent to the circle x2 + y2 = 100 at the point... (answered by josgarithmetic)
The homework question is,Show that the line with equation y=2x-10 is a tangent to the... (answered by scott8148)
In 10–12, write an equation of each circle that has the given point as center and the... (answered by josgarithmetic)
Find the equation of the tangent line to the circle whose equation is x2 + y2 - 18x +... (answered by lwsshak3)
Points A(2, 1) and B (4, -5) like on a circle. If line 2x-y-13=0 is a tangent to the... (answered by josgarithmetic,MathTherapy)
Find the equation of the line tangent to y = –x2 + 3x + 8 at x = 2.
y = –2x + 2
y = (answered by Edwin McCravy)
Sheila needs to determine the equation of a line passing through the point (-6, -2) that... (answered by rothauserc)
Draw the line y = 2x−5 and the circle x2 +y2 = 5. Use algebra to show that these graphs (answered by Shin123)