Question

Which answer is an equation in point-slope form for the given point and slope?

Point: (1, 9); Slope: 5



Responses

a y−9=5(x+1)
a y minus 9 equals 5 left parenthesis x plus 1 right parenthesis

b y+9=5(x−1)
b plus 9 equals 5 left parenthesis x minus 1 right parenthesis

c y−9=5(x−1)
c y minus 9 equals 5 left parenthesis x minus 1 right parenthesis

d y−1=5(x+9)

Answer 1

c. y − 9 = 5(x − 1)

Point-slope form is y − y1 = m(x − x1). Plugging (1,9) and m = 5 gives y − 9 = 5(x − 1).