6 (7x - 3)
You have to factor 6 out of 42x - 18.
Hope this Helps!!
25 is the length of x, using the 30-60-90 special triangle method

Therefore, the slope of the line is 1. In case if you want to know the equation.

Therefore, the equation is y=x+10 by substituting the (-6,4) or we can substitute (6,16) too.

It's the same, you can use any orders given.
Overall, the slope is 1 and the equation is y=x+10
2/3
6x = 4
x = 2/3
The scale factor can be determined by using similar sides