Question

Which equation is a point slope form of the equation of this line? (-2,1). (1,7)

A. -2x+y+5=0
B. Y=2x-5
C. (Y+1)=-1/2(x-2)
D. (Y-1)=2(x+2)

Answer 1

hello :
answer : D. (Y-1)=2(x+2)
because :
if x=1 ... y =7
if : x= -2 .... y= 1
the slope is : (1-7)/(-2-1) = -6/-3=2