Question

please help me understand this. How do I find the slope of a Line like. say (-2,-2) and (5,3) how do I find the slope ?

Answer 1

Are you familiar with the equation for the slope of the line?
\[m=\frac{y_1-y_2}{x_1-x_2}\]

Answer 2

No

Answer 3

Okay, slope is defined by m = rise/run

Answer 4

Ok

Answer 5

the rise is the change in Y values and the run is the change in x values

Answer 6

alright

Answer 7

If you plug your values into the formula above, that will give you the slope of the line. Let me know if you need help.

Answer 8

I don't understand that part
I understand what M = but how Do I plug in the values, and how does it give the slope ??

Answer 9

okay, you have (-2,-2) and (5,3) and the format is (x,y)

Answer 10

Take the y value from your first coordinates and subtract the y value from the second set of coordinates

Answer 11

so -2 - 5?

Answer 12

Correct

Answer 13

oops

Answer 14

that's your x value

Answer 15

2 - 3 ??

Answer 16

you're missing a sign infront of your 2

Answer 17

-2

Answer 18

Correct, -2-3=-5

Answer 19

so in this case its -7 over -5 ?

Answer 20

(-7,-5) ?

Answer 21

-7/-5=7/5

Answer 22

negatives turn to positive ??

Answer 23

Yes, dividing a negative by a negative results in a positive number

Answer 24

oh yea so if it was one positive with one negative it'd be negative ?

Answer 25

(-7,1) = (-7,-1) ??

Answer 26

\[m=\frac{-2-3}{-2-5}=\frac{-5}{-7}=\frac{5}{7}\]

Answer 27

okay I understand

Answer 28

How do I solve these right here ?

Find the slope of the line through the pair of points.

A(2, –3), P(2, 9)

It's another question I have

Answer 29

whats the A and P
confusing me

Answer 30

Okay, you try the equation \[m=\frac{y_1-y_2}{x_1-x_2}\]

Answer 31

They're just points

Answer 32

use this equation the same way as we did before, don't worry about the letters infront, that's just the name of the point

Answer 33

This is actually easier than the previous question, since both of the points x value is 2, we know that the line will be straight

Answer 34

Oh okay

Answer 35

and since the line is vertical, the slope will be 0

Answer 36

right

Answer 37

I have another question trying to do a pre algebra test and some of the questions are confusing so here is a question they have


Graph the function. Describe your graph. Be specific.

y = 4|x|

How would I do this ??

Answer 38

Do you understand the absolute value sign?

Answer 39

Well I know what Y = but idk what 4x is

Answer 40

do you understand y=|x|?

Answer 41

y axis x axis etc all i know really

Answer 42

no

Answer 43

|x|= x, if x >=0
-x, if x < 0

Answer 44

Do you have something to graph y = |x|?

Answer 45

no the problem is all its asking