How do i do these only need to do 1 i just need to see how to do it!

First off, let's keep in mind something, two lines that are parallel to each other, have the same slope, and two lines that are perpendicular to each other, have negative reciprocal slopes.

7)

so is parallel to 10x-2y=3... now, let's solve that for "y", to put it in slope-intercept form 



so then, we're looking for a line whose slope is 5/2 and passes (0,1)



8)

now, is parallel to    , now, that's already in slope-intercept form, so the slope we can see is just 7, so then.

we are looking for a line whose slope is 7 passes (5,8)



9)

well, this function is also already in slope-intercept form, so we can tell the slope is 2/5.

now, the line we're looking for, is perpendicular to it, so it has a negative reciprocal slope, let's check



so, we're looking for a line whose slope is -5/2 and passes (-4,6)



10)

let's solve for "y" first



now, let's find the negative reciprocal of that



so, we're looking for a line whose slope is -7/5 and passes (4,1)