Will mark brainliest !! (correct answers only)
if you answer, theres two more questions up on my page, help me lol.

Which linear equations have an infinite number of solutions? check all that apply.  (x  –  3/7)  =  2/7(3/2x  –  9/14)8(x  +  2)  =  5x  –  1412.3x  –  18  =  3(–6  +  4.1x)(6x  +  10)  =  7(x  –  2)4.2x  –  3.5  =  2.1 (5x  +  8)

Answer this question! 30 points and brainliest!

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?