Solve the system of equations using the substitution method. First of all, I don't know what the subsite method is and if I could get help with this then I can get the rest, it is on my home work.
PLEASE HELP ASAP :)
y=2x+1
3x+2y=23

Step-by-step explanation:

substitution is when you replace x with a number to find y, or vice versa. there is not one answer when doing this, its a series of answers.

for your question y=2x+1, we can substitue x with any number to find out y. any number, it can be random but i suggest starting with 1. you can also do negatives but like i said, 1 is the most basic.

Once you substitute x with 1, the equation turns to 2 times 1, since we substitued.

when x is next to a number, it means to multiply it.

2 times 1 is 2, and then '+1', is 3.

you can substitute this again with different numbers

example, if you subbed with 5, it would be

2 times 5, which is 10, +1 which is 11. that means y is 11.

this is the same method you can use for the second question. remember to substitute with atleast 5 numbers for your teacher to see :)

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)