Question

What is the slope of a trend line that passes through the points (–3, 3) and (18, 26)?
StartFraction 15 Over 29 EndFraction
StartFraction 21 Over 23 EndFraction
StartFraction 23 Over 21 EndFraction
StartFraction 29 Over 15 EndFraction

Answer 1

ok, so do you know the slope formula?

Answer 2

no

Answer 3

ok so the slope formula is \[\frac{ y2-y1 }{ x2-x1 }\]

so our ordered pairs are (–3, 3) and (18, 26)

do you know how to label them as y2 and y1?

Answer 4

no?

Answer 5

that's fine!!
since (-3,3) comes first we will label that as x1, and y1, with -3 being x1 and 3 being y1.


does this make sense so far?

Answer 6

yes

Answer 7

it dose

Answer 8

ok so we do the same thing for (18,26) but instead of the number 1, we use 2. so x2 is 18, and y2 is 26.

understand?

Answer 9

ok

Answer 10

now the formula says to do y2-y1 so that means 26 -3

so what is 26-3?

Answer 11

do you mean subteact

Answer 12

yes

Answer 13

oh ok then 23

Answer 14

good! now we do the same for the x's.

so what is 18-(-3) ?

Answer 15

21

Answer 16

good! so you have \[\frac{ 23 }{ 21 }\]

can this be reduced?

Answer 17

no

Answer 18

good! so your answer is.......?

Answer 19

23/21

Answer 20

good job,you got it !

Answer 21

thank you so much

Answer 22

of course, let me know if you need help again!

Answer 23

ok i will ^-^