Question

Find the equation of the line passing through (2,3) and (1,5)

Answer 1

y =-2x+7

Explanation:

Hello : let A(2,3) B(1,5)

the slope is : (YB - YA)/(XB -XA)

(5-3)/(1-2) = 2/-1 =-2

an equation is : y=ax+b a is a slope

y = -2x +b

the line through point (2,3) : 3 = (-2)(2)+b

b = 7

the equation is : y =-2x+7