I'm stuck on these questions and I don't know how to solve.

With the same x- intercept as 3x-7x+12=0 and parallel to 6x+8y-5=0

I need to find the equation for this line.

Also I need the equation for this line.

With the same x-intercept as y=-2x+10 and perpendicular to 10x+4y+7=0

Please explain the formula on how you found the equation, thanks.