Question

im having a really hard time solving and graphing liner equations... plz help!!

Answer 1

??..wat you don't understand?

Answer 2

wait til you have to make a curve :)

Answer 3

true

Answer 4

i dnt know how to solve them

Answer 5

do u mean finding the y and x intercepts?

Answer 6

give us something to work with....

Answer 7

like y + x = -7

Answer 8

Do you know all the parts to this equation:

y = mx + b

Answer 9

no i dont understand that part

Answer 10

y stands for the value of your "y" coordinate.

m stands for the way the line slopes; called the slope.

x stands for the value of the "x" coordinate.

b is the value of where the line crosses the y-axis.

does any of that make sense?

Answer 11

it makes some sence... i just get confused when it comes to solving more then graphing.

Answer 12

as long as you can get an equation to resemble this construction (y = mx+b) then you can solve for any point on the line.

Lets take your equation you gave us for an example...

Answer 13

y + x = -7 ; do you know how to make this look more like (y=mx+b)?

Answer 14

do u have yahoo messanger??

Answer 15

nope...

Answer 16

ok sorry my daughter is messinga round

Answer 17

so when i read in the book its so confusing on how to solve these probelms can you show me step by step what to do?

Answer 18

I can try:

In essense; we want to know what values to make "y" for any given value of "x".

In your equation; we have:

y + x = -7

use algebraic techniques to solve for "y"; which in this case just means subtracting (x) from both sides to get:

y +x-x = -7-x

y = -x -7 ; which resembles our (y = mx + b)

Do you understand it so far?

Answer 19

Once we have any two points that we can connect together; we can form a straight line.

Many times, those two points will be where the line crosses the y-axis; and where the line crosses the x-axis.

These crossing points are called "intercepts" becasue it is where the line actually gets intercepted by the x or y axis.

Answer 20

ok

Answer 21

What two points (called coordinates) can you come up with using :

y = -x -7

in order to connect and make a line?