Josarah123 3 years ago Use point-slope to write an equation of a line with slope of -7/9 and passing through the point (5,3). Write final equation in slope-intercept form

1. baldymcgee6

do you know what point slope form is?

2. Josarah123

yeah. y=mx+b

3. Josarah123

but what is point-slope?

4. baldymcgee6

That ^ would be slope intercept form..

5. baldymcgee6

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6. Josarah123

....where do i get an x0 in this? god that just confused me so much more

7. Josarah123

cant i just do -3=-7/9(5)+b

8. Josarah123

find b then plug it in?

9. baldymcgee6

|dw:1351645804759:dw|

10. baldymcgee6

What you suggested about is a good way to find slope intercept form..

11. Josarah123

so i can use that?

12. baldymcgee6

to find slope intercept, but it is easier to use point-slope and THEN get slope intercept

13. Josarah123

so if I used point slope it would be y=-7/9(x--3)+5

14. Josarah123

ugh i hate this

15. baldymcgee6

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16. Josarah123

isn't it -3?

17. baldymcgee6

you're co-ordinates given are (5,3)

18. Josarah123

oops. its suppose to be -3. sorry i typed it wrong. Whatever I'm so lost. I'll just do it the way I typed. I just don't understand point-slope. But thanks for trying to teach me. I'm so dumb.