In Exercises $25-34,$ find an equation for each line in the form $axby=c,$ where $a,b,$ and $c$ are integers with no factor common to all three and $a0.$

$25.x-$intercept $-8,y-$intercept $-2$

$26.x-$intercept $-2,y-$intercept $4$

$27.$ Vertical, through $(7,-8)$

$28.$ Vertical, through $(-8,-5)$

$29.$ Through $(-10,45),$ parallel to $9x2y=17$

$30.$ Through $(2,-5),$ parallel to $2x-y=-4$

$31.$ Through $(4,9),$ perpendicular to $3xy=2$

$32.$ Through $(-2,6),$ perpendicular to $2x-3y=5$

$33.$ The line with $y-$intercept $9,$ perpendicular to $x4y=11$

$34.$ The line with $x-$intercept $-\frac{2}{3}$ and perpendicular to $2x-y=4$