Question 73105
Solve for x- and y-intercepts. Standard form is {{{ax+by = c}}}
To find the x-intercept, let y = 0 and solve for x.
To find the y-intercept, let x = 0 and solve for y.
1) {{{8y+4x = 24}}} 
{{{4x+8y = 24}}} Let x = 0.
{{{4(0)+8y = 24}}}
{{{8y = 24}}} Divide both sides by 8.
{{{y = 3}}} This the y-intercept.
{{{4x+8y = 24}}} Let y = 0.
{{{4x + 8(0) = 24}}}
{{{4x = 24}}} Divide both sides by 4.
{{{x = 6}}} This the x-intercept.
{{{graph(300,200,-5,8,-5,5,(-1/2)x+3)}}}
2){{{5y+10x = 30}}}
{{{10x+5y = 30}}} Let x = 0.
{{{10(0)+5y = 30}}} Simplify.
{{{5y = 30}}} Divide both sides by 5.
{{{y = 6}}} Ths the y-intercept.
{{{10x+5y = 30}}} Let y = 0.
{{{10x + 5(0) = 30}}} Simplify.
{{{10x = 30}}} Divide both sides by 10.
{{{x = 3}}} This is the x-intercept.
{{{graph(300,200,-5,5,-5,8,-2x+6)}}}

You should get the idea by now so try the others on your own...if you still have trouble with them, please repost.