Question 131552
The line will have the form {{{y = mx + b}}} where {{{m}}}= slope
{{{m = -.8}}}
P(2,4)
{{{y = -.8x + b}}}
Now plug in x = 2 and y = 4 to find {{{b}}}
{{{4 = -.8*2 + b}}}
{{{4 = -1.6 + b}}}
add 1.6 to both sides
{{{b = 4 + 1.6}}}
{{{b = 5.6}}}
{{{y = -.8x + 5.6}}} answer
check:
does line go through (2,4)?
{{{y = -.8x + 5.6}}}
{{{4 = (-.8)*2 + 5.6}}}
{{{4 = -1.6 + 5.6}}}
{{{4 = 4}}}
OK