Question

Are these all correct?
converting different forms of equations

Answer 1

check the 2nd one again

Answer 2

and the last one :)

all others are correct.
though for 3rd you can write
4x -y = -7

Answer 3

for 2nd you probably meant
y= -4.5x +3

but keep it as
y = -9/2 x +3

Answer 4

for 5b.
The standard form Ax+By = C
has A as a positive integer :)

so multiply throughout by -1

Answer 5

Thanks! :)

Answer 6

welcome ^_^