The length of ab_ is 9 cm a dilation with a scale factor of 2 is applied to ab_ what is the length of the image of ab after the dilation is applied

The scale factor of two means you need to multiply the original length by 2:

9 x 2 = 18

The new length would be 18 cm.

1. The best answer is A since a solution is where 2 lines intersect. Whether or not they intersect the x or y axis is completely irrelevant (so is whether they intersect the origin).

2. y=-x+5
-x+5=1/2x+2
-x+3=1/2x
3=3/2x
2=x

y=-(2)+5
y=3

(2,3)

3. It seems like the lines are completely on top of each other (coinciding) so there are infinitely many solutions.