Question

How do you write an equation of a line given (1, 2) and (3, 4) in a slope -intercept form

Answer 1

y = x + 1

Explanation:

find slope first:

(4-2) / (3-1) = 2/2 or 1

now find the y-intercept, or 'b' by using one of the two given points and the slope

2 = 1(1) + b

2 = 1 + b

1 = b

equation in slope-intercept form:

y = 1x + 1 or y = x + 1