Question

What is the slope of the line that passes through the pair points (2, 5) and (8, 3)?

1/3
-1/3
3
-3

What is the slope of the line that passes through the pair points (-5.2, 8.7) and (-3.2, 2.7)?

2
3
-2
-3

What is the slope of the line that passes through the pair points (3/2, -2) and (-3, 7/3)

-27/26
-26/17
26/27
27/26

Answer 1

The slope of the line through points (x1,y1) and (x2,y2) is given by :
\(\huge m=\frac{y_1-y_2}{x_1-x_2}\)
now,just put the values and find m in each case.

Answer 2

isn't it
\[m=\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]??

Answer 3

y2-y1
-----
x2-x1

Data is right

Answer 4

they both are same thing
you'll get the same answer

Answer 5

oh ok...

Answer 6

So for number 1 it would be..
5^1 - 3^2
__________
2^1 - 8^2

Answer 7

why did you square them ?
it'll be just
\(\large \dfrac{5-3}{2-8}=...?\)

Answer 8

Oh I got confused, I thought those were exponents.

Answer 9

i mean we take
x1 = 2
and y1 = 5
those are just sub-scripts, not exponents :)

Answer 10

Oh okay thanks, yeah sorry got confused xD

Answer 11

so what slope did u get ?
m=..

Answer 12

Let me work it out, hold on.

Answer 13

-1/3 ...?

Answer 14

absolutely correct! :)

Answer 15

Thank you! I never really got slopes, this helped me. Again, thanks c:

Answer 16

welcome ^_^

Answer 17

Wait sorry but how do I find out this one? What is the slope of the line that passes through the pair points (3/2, -2) and (-3, 7/3)?
-27/26
-26/17
26/27
27/26

Because I got
4.5
_____
-4.33

Answer 18

[-2-7/3]/[3/2-(-3)]

Answer 19

[-13/3]/ [9/2]
= -13/3 times 2/9
simplify

Answer 20

-26/27?

Answer 21

yep :)

Answer 22

Thanks again! cx

Answer 23

Wish I could give you another metal! XD

Answer 24

i am not here for medals.... if you understand, i am happy, thats my medal :)

Answer 25

Haha, well that's great ^-^ Happiness is the biggest reward someone can get :D