Equations of Tangent Lines and Horizontal Tangent Lines

Line segment AB is tangent to circle C. What is the radius of the circle?

• 11

• 15

• 10

• 8

Tags

CCSS.HSG.C.A.2

Line segment AB and AD are both tangent to circle C. Find x.

• 2

• 3

• 4

• 5

Tags

CCSS.HSG.C.A.2

Line segment AB is tangent to circle C. What is the radius of the circle?

• 3.75

• 4.25

• 3.25

• 3.5

Tags

CCSS.HSG.C.A.2

Line segment AB and line segment AD are both tangent to circle C. What is the value of x?

• 4.5

• 5

• 5.5

• 6

Tags

CCSS.HSG.C.A.2

Line segment AB is tangent to the circle.

• True

• False

Is line AB tangent to the circle?

• YES

• NO
  NO

• Can't Tell
  Can't Tell

Assume that the lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x to the nearest tenth.

• 11.7

• 10.8

• 13.0

• 14.2

Tags

CCSS.HSG.C.A.2

What is the value of x?

• A

• B

• C

• D

Tags

CCSS.HSG.C.A.3

What is the equation of the tangent to the curve f(x)= 4x²+2x-1 at the point x=0?

• y+1=2(x+1)

• y = 2x - 1

• y=2x+2

• y = 2x -3

If f '(x) = 0, what does that mean with respect to the tangent line?

• Tangent line is vertical

• Tangent line has a positive slope

• Tangent line is horizontal

• Tangent line has a negative slope