Question

A line segment with endpoints Q negative six comma nine and R twelve comma negative three is dilated with the origin as the center of dilation. The resulting endpoints are Q prime negative two comma three and R prime four comma negative one. What is the scale factor?

one-ninth

one-third

3

9

Answer 1

calculate the original and dilated distances using distance formula..
scale factor = dilated length/ original length

Answer 2

@swarup169 would it be 3?

Answer 3

1/3
scale factor = dilated/original length

Answer 4

o ok cause I wasn't sure between those two, thanks can u help me with another problem?

Answer 5

ok

Answer 6

Regular pentagon A B C D E is similar to M N O P Q. If line segment A B equals 8 centimeters and line segment O P equals 4 centimeters, what is the scale factor between A B C D E and M N O P Q?

zero point five

2

4

not enough information

Answer 7

@swarup169

Answer 8

not enough information

Answer 9

thanku so much that's what I thought because it didn't give the info for q

Answer 10

Quadrilateral A B C D has vertices at A six comma three, B three comma nine, C six comma six and D twelve comma three. It is reflected across the x-axis. What are the new coordinates? Explain.

Answer 11

since it is reflected across X axis... X axis will act like mirror
so the Y coordinates will change sign...i.e. positive Y coordinate will be negative and negative will be positive..no sign change in X coordinate

Answer 12

So, (-6,-3), (-3,-9) (-6,-6), AND (-12,-3) @swarup169