Orlando is doing a math problem where he needs to dilate a triangle by a scale factor of four. The ordered pairs for his pre-image are (-2, 1), (8, 4), and (3, 0). Which of the following ordered pairs is not coordinates for a point in his image?
(12, 0)
(-8, 4)
(32, 16)
(2, 1)

Question

Orlando is doing a math problem where he needs to dilate a triangle by a scale factor of four. The ordered pairs for his pre-image are (-2, 1), (8, 4), and (3, 0). Which of the following ordered pairs is not coordinates for a point in his image?
(12, 0)
(-8, 4)
(32, 16)
(2, 1)

amistre64 · Answer

what is the center of dilation?

precal · Answer

scale factor means to multiply it by that number
4 times (-2,1)   is (-8, 4)  listed
4 times (8,4)   is (32,16)  listed
4 times (3,0)  is (12,0) listed
so (2,1) is the solution

amistre64 · Answer

|dw:1332885358162:dw|

anonymous · Answer

Thanks Precal nd amistre idk..??

anonymous · Answer

i hope yall are right

amistre64 · Answer

its important to know where the dilation is coming from so tha tyou can calculate from that position; assuming it to be the origin might be a safe move tho

anonymous · Answer

math is not my thing

precal · Answer

@amistre64 
On these types of problems, I believe unless the center of dilation is give, it is understood to be the origin. I see these types of problems on state exams.
Scale factor is the number that we multiply to aka as the scalar