Answer:
The answer is y = - 4x + 5
Step-by-step explanation:
Equation of a line is y = mx + c
where m is the slope
c is the y intercept
Using points (4,1) and (2,9)
m = 9-1/2-4 = 8/-2 = - 4
Equation of the line using point (4,1) and m -4 is
y - 1 = -4(x -1)
y - 1 = - 4x + 4
y = - 4x + 4 + 1
y = - 4x + 5
Hope this helps you
