Question

Can someone teach me about point slope form?

Answer 1

If you know the slope of a line and also a point on the line then you can write its equation in point-slope form.

Answer 2

so you use point slope form if you don't know the y intercept?

Answer 3

the general form of the equation is

y - y1 = m(x - x1) where m is the slope of the line and (x1, y1) is the point.


for example if the slope = 3 and the point is (1,2) then we have

m = 3, x1 = 1 and y1 = 2 and the equation is

y - 2 = 3(x - 1)

Answer 4

yea if you dont know the y-intercept use this form

Answer 5

sorry this is really confusing

Answer 6

what part dont you understand

Answer 7

i read it over a couple times and it makes a little bit more sense, but then how would u solve it

Answer 8

do u solve this equation to find the y intercept?

Answer 9

note that x1 and y1 stand for the given values of the point like (3,4) for example.
here x1 = 3 and y1 = 4

Answer 10

well the question might be to write the equation - that would be the solution

Answer 11

do you solve the equation or graph it

Answer 12

to find the y-intercept you would would put x = 0 then solve for y.

Answer 13

y - 2 = 3(x - 1)

to find y intercept x = 0 so

y - 2 = 3(0 - 1)
y - 2 = -3
y = -1

y-intercept is at y = -1

Answer 14

ohhh okay

Answer 15

thank u so much for ur help i think i understand now

Answer 16

yw Its worth committing the point-slope form to memory.

Answer 17

ill try!