Question

Slope intercept from two points

Answer 1

-2x+6.

Explanation:

1) if A(1;4), B(2;2), then the required equation is:

2)
`(x-X_A)/(X_B-X_A) =(y-Y_A)/(Y_B-Y_A); \ => \ (x-1)/(2-1)=(y-4)/(2-4); \ => \ (x-1)/(1)=(y-4)/(-2);`

3) if to re-write this equation as slop-interception form, then:

y= -2x+6.