## anonymous 4 years ago Determine the slope of the line which passes through these two points: (-1, 3) and (6, 9).

1. anonymous

6/7

2. anonymous

y=ax+b a=(9-3)/(6-(-1))=6/7

3. anonymous

(9-3)/(6--1) 6/7

4. anonymous

Line equation = $y-y _{0}=2a(x-x _{0})$

5. anonymous

y−y 0 =a(x−x 0 ) this is right

6. anonymous

y-9=2*(6/7)*(x-6)

7. anonymous

don't mix it up with physic

8. anonymous

you're wrong amir.sat

9. anonymous

you're wrong

10. anonymous

not me

11. anonymous

review your lesson more timea lol

12. anonymous

|dw:1327679283219:dw|

13. anonymous

Gradient = distance up divided by distance along, i.e. gradient is $m = \frac{y_2 - y_1}{x_2-x_1}$ Where the points have coordinates $(x_1, y_1), (x_2, y_2)$ That is the formula you use to calculate the gradient of any line passing through two known points.

14. anonymous

y=(12/7)x-(9/7)

15. anonymous

Use $\Large \frac{{\Delta y}}{{\Delta x}} = \frac{{{y_2} - {y_1}}}{{{x_2} - {x_1}}}$

16. anonymous

$\Large \frac{{{y_2} - {y_1}}}{{{x_2} - {x_1}}} = \frac{{9 - 3}}{{6 - - 1}} = \frac{6}{7}$ So whoever said otherwise is incorrect.