Answer:
y=-4x+17
Step-by-step explanation:
Slope intercept form is [tex]\frac{y2-y1}{x2-x1}[/tex]
[tex]\frac{9-1}{2-4}[/tex]
[tex]\frac{8}{-2}[/tex]
-4
y=-4x+b
plug in one of the points to find b, I chose (4,1)
1=-4(4)+b
1=-16+b
add 16 to both sides
b=17
put it together and you get y=-4x+17
