Question

Using the point-slope formula, what is the equation of the line that passes through the points (1, 5) and (0, 0)?

A. y = x
B. y = 5x
C. y = 5x + 10
D. y = 5x – 1

Answer 1

y-y1=m(x-x1)
for a point (x1,y1) and slope, m

slope=(y2-y1)/(x2-x1)=(0-5)/(0-1)=5/1=5
m=5
a point is (0,0
y-0=5(x-0)
y=5(x)
y=5x

B is answer