Question

what is the point slope of the line with slope -10 that goes thru (1, 4) ?
A. y-4 = -10(x-1)
B. y+4 = 10(x+1)
C. y+4 = -10(x+1)
D. y-4 = 10(x-1)

Answer 1

Substitute the values and solve x=1 y=4, the one that proves itself is the answer

Answer 2

or you could solve for the intercept points and graph--but that is a lot longer

Answer 3

Point slope form is

y-y1=m(x-x1)

(x1,y1) is your point, m is the slope

Answer 4

so...its
C. y+4 = -10(x+1)!

Answer 5

No. It's A, the sign changes on the points