When is a line tangent to a curve?
A) if the line tangent crosses the curve at one point
B) if the line tangent touches the curve at one point, without crossing it
C) it the line tangent crosses the curve at a minimum of two points
D) if the line tangent never touches the curve

Question

When is a line tangent to a curve?  
A) if the line tangent crosses the curve at one point 
B) if the line tangent touches the curve at one point, without crossing it 
C) it the line tangent crosses the curve at a minimum of two points 
D) if the line tangent never touches the curve

Quizplus · Accepted Answer

A line is tangent to a curve if it touches the curve at one point without crossing it. This is the definition of a tangent line.

When Is a Line Tangent to a Curve