Question

Write a linear equation of a line through points (5,5) and (1,0) in point slope form.

A) y=5/4(x-1)
B) y=1/4(x-5)
C) y-5=1/4(x-1)
D) y-1=5/4(x-1)

Answer 1

(5,5)(1,0)
slope = (0 - 5) / (1 - 5) = -5/-4 = 5/4

y - y1 = m(x - x1)
slope(m) = 5/4
(5,5)...x1 = 5 and y1 = 5
sub
y - 5 = 5/4(x - 5) .... this is one, but it is not an answer choice

y - y1 = m(x - x1)
slope(m) = 5/4
(1,0)...x1 = 1 and y1 = 0
sub
y - 0 = 5/4(x - 1)
y = 5/4(x - 1) <=== this is one