Question

For anyone that knows how to do this i only need help with these two questions

-4x-1=-y
solve for y

-4y+20+3x=0
solve for y

Answer 1

`-4x-1=-y\\y`

Flip the equation:

`-y=-4x-1`

Divide both sides by -1:

`(-y)/(-1) =(-4x-1)/(-1)`

`y=4x+1`

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`-4y+20+3x=0\\y`

Add -3x to both sides of the equation:

`3x-4y+20+-3x=0+-3x\\-4y+20=-3x`

Add -20 to both sides of the equation:

`-4y+20+-20=-3x+-20\\-4y=-3x-20`

Divide both sides by -4:

`(-4y)/(-4) =(-3x-20)/(-4)`

`y=(3)/(4) x+5`