Question

Write an equation of a line in point-slope form with a slope of -3/4 and passing through the point (1,-5)

Answer 1

I think point slope form is y=mx+b, but I couldnt be mistaken (kinda forgot the names of some things)

so, y=mx+b

m=-3/4 so y=-3/4x+b

y=-5, x=1: -5=-3/4(1)+b

b=-5+3/4
b=-17/4
y=-3/4x-17/4

Answer 2

Thank you

Answer 3

You are given the slope in this problem, so to find the equation of a line plug the slope, x, and y values into y-y1=m(x-x1)

Answer 4

where slope = m

Answer 5

and you will have the equation

Answer 6

no problem.

Answer 7

@klerg10, you gave standard form
point-slope form is y-y1=m(x-x1)

Answer 8

@kierg10

Answer 9

if you solve it down it gets to the same thing.

Answer 10

yeah, still good to know the difference in standard form and slope form :)

Answer 11

if you don't need any more help @cacique, please close the question

Answer 12

y-y1=m(x-x1)
y--5=-3/4(x-1)
y+5=-3/4(x-1)
y+5=-3/4x+3/4
y=-3/4x+3/4-5
y=-3/4x-17/4

Answer 13

so it's the same thing XD

Answer 14

you get to the same answer

Answer 15

yup

Answer 16

IDK about you, but personally no teacher I have ever had has used the y-y1=m(x-x1) format......the first time I encountered it I was really confused.

Answer 17

I have used the point slope formula many times
That is why I have it down

Answer 18

I know the standard form too but since the question asked for point-slope form that is what we used

Answer 19

true