Question

Polygon ABCDE is dilated by a scale factor of 3 with the center of dilation at the origin to create polygon A′B′C′D′E′. If the endpoints of BC¯¯¯¯¯ are B(3, 5) and C(5, 10), what is the slope of B'C'¯¯¯¯¯¯¯ ?

Answer 1

dilation will not change slopes or angles
so you can simply find the slope of BC

Answer 2

remember the slope formula ?

Answer 3

yea

Answer 4

good, use it

Answer 5

B(3, 5) and C(5, 10)

Answer 6

ok thank you i got (2,5)

Answer 7

slope is a single number, NOT a point..

Answer 8

www.basic-mathematics.com/slope-calculator.html
use this for your other slope questions

Answer 9

Oh wait, do you mean you get \(\large \dfrac{5}{2}\) for slope ??

Answer 10

the formula is (X2-X1) (Y2-Y1)

Answer 11

yeah

Answer 12

slope formula is
\[\large \dfrac{y_2-y_1}{x_2-x_1}\]

Answer 13

Notice there is a horizontal bar between (y2-y1) and (x2-x1)
it refers to division

Answer 14

slope = (y2-y1) / (x2-x1)

Answer 15

yeah

Answer 16

5/2 is right ! good job :)

Answer 17

thx :D

Answer 18

yw!