3-4x+5=16-4x =>>kick 1. -4x to right side =>>
8=16-4x+4x=>> 8=16 that means question is wrong lol
Question should be 3+4x+5=2(8-2x) or 3-4x+5=2(8+2x)
Then the answer will be 8x=8 =>> x=1 :)
Hope that helps!
<em>ps. I attached a sheet of trigonometry identities</em>
Slope is -1/5
Y-intercept is 21
Equation is y=-1/5x+21
Yes it’s proportional :)