Question

Write the equation given the points (1,2) and (3,4)

Answer 1

(1,2)(3,4)
slope = (4 - 2) / (3 - 1) = 2/2 = 1

y = mx + b
slope(m) = 1
use either of ur sets of points...(1,2)....x = 1 and y = 2
now we sub and find b, the y int
2 = 1(1) + b
2 = 1 + b
2 - 1 = b
1 = b

so ur equation is : y = x + 1