Question 686913
the form you want to get each equation into is {{{y = mx + b}}}
I'll do the first one, then you can use the same process to do the rest
{{{4x-y=16}}} get the term with y in it on the left side
{{{-y = -4x + 16}}}
{{{y = 4x - 16}}}
You are done!
Slope is 4, y intercept is the point (0,-16)

Let's do the last one too, since that one it the most involved
{{{4x+7y=8}}} isolate y
{{{7y = -4x + 8}}}
{{{y = (-4/7)x + 8/7}}}
This is the the correct form. m=(-4/7) and b = 8/7
So slope is (-4/7) and y intercept is the point (0,8/7)