Analytic Geometry

Question 1

What is the midpoint formula?

Answer 1

(x1 + x2)/2 , (y1 + y2)/2

Question 2

What can you say about parallel lines?

Answer 2

1) hey have the same slope
2) they never touch

Question 3

What can you say about perpendicular lines?

Answer 3

A) They have a relationship called negative reciprocal

1) take the reciprocal of slope 1

2) take change the sign of the slope 1

3) now compare to the other slope, if they are the same, they are perpendicular, if they are different they are not perpendicular

B) they form a 90 degree angle between them

Question 4

What is the distance formula

Answer 4

d= sqrt((x2 - x1) ^2 + (y2 - y1) ^2)

Question 5

How many situations are there for solving for the equation for a linear function?

Answer 5

1) 2 points

2) 1 point and the slope

3) a point and the initial value