Answer:
y = -1/2x+7
Step-by-step explanation:
First find the slope using the slope formula
m = ( y2-y1)/(x2-x1)
= (3-5)/( 8-4)
= -2/4
= -1/2
The slope intercept form is
y = mx+b where m is the slope and b is the y intercept
y = -1/2x+b
Substitute a point into the equation
3 = -1/2(8) +b
3 = -4+b
Add 4 to each side
3+4 = -4+b+4
7 = b
y = -1/2x+7
