Asked by terry

X+3y+9=0 and x+3y-7=0 are parallel or not ,how to work out,can anyone show me please

11 years ago

Answered by Reiny

For any linear equation in the form
Ax + By + C = 0 , the slope is -A/B

So for both of your equations, the slope is -1/3
thus they are parallel

11 years ago

Answered by terry

Thanks,now I totally understand

11 years ago

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