Question

ABC is dilated by a scale factor of 3 with the origin as the center of dilation, resulting in the image A'B'C'. If the slope of AB is -1.2, what is the slope of A' B' ? i really need help with this! i am doing credit recovery and if i don't do this i can't graduate

Answer 1

i know it's either -1.2 3.6 1.2 1.8

Answer 2

When dilating about the origin with a scale factor of 3, each x and y coordinates will get multiplied by 3. When you take the slope of A'B', the scale factor 3 will cancel out leaving the original slope unaltered.

Answer 3

so it seems like it would be 3.6

Answer 4

Slope of AB = (y2-y1) / (x2-x1) = -1.2

Slope of A'B' = (3y2-3y1) / (3x2-3x1) = 3(y2-y1) / 3(x2-x1) = (y2-y1) / (x2-x1) = -1.2