Question

which is an equation in point-slope form for the given point and slope point (-3 7) slope 4
A y-7=4(x-3)
B y-7=4(x+3)
C 7+7=4(x+3)
Dy+7=4x-12

Answer 1

this form is

y - y1 = m(x - x1)

where m = slope and (x1,y1) is the given point

Answer 2

oh ok

Answer 3

ok so what is the y-y1

Answer 4

well (x1,y1) = (-3,7) so x1 = -3 and y1 = 7

Answer 5

you just replace m , x1 and y1 in the equation by the given values

Answer 6

ill start you off
y - y1 = m(x - x1)
y - 7 =

can you do the right side?

Answer 7

m = 4 and x1 = -3

Answer 8

oh ok i think i get it , is the answer y-7=4(x-3)

Answer 9

nearly right its x + 3 in the panertheses beacuse x1 = -3

y - 7 = 4(x - (-3))

- note the double negative - this simplifies to a '+'

so its
y - 7 = 4(x + 3)

Answer 10

-(-3) = + 3

ok?

Answer 11

ok thank you for your help