What type of transformation transforms (a , b) to (-a , b)

A reflection across the y axis

Step-by-step explanation:

think about it, if you reflect some point across the y-axis it will have a negative x value.  For example, if you reflect (1,2) across the y-axis you will get (-1,2)

This type of transformation is called mirroring in the y-axis.

Step-by-step explanation:

By mirroring in the y-axis, you can find the new value, by multiplying the x-coordinate by -1.

Any point (a , b) will be transformed after mirroring in the y-axis, to (-a , b), which is the question here.

This type of transformation is called mirroring in the y-axis.

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x