Question

Medal for best answer!!!




Part A: Explain why the x-coordinates of the points where the graphs of the equations y = 4−x and y = 2x + 3 intersect are the solutions of the equation 4−x = 2x + 3.

Part B: Make tables to find the solution to 4−x = 2x + 3. Take the integer values of x between −3 and 3.

Part C: How can you solve the equation 4−x = 2x + 3 graphically?

Answer 1

@foolofatook

Answer 2

part a makes no sense.

Answer 3

im not good with graphs

Answer 4

Can u answer the 2nd part?

Answer 5

I was mostly confused with the 2nd part

Answer 6

ok

Answer 7

lets start with plugging in the lowest number and go up

Answer 8

4-(1)=2(1)+3 3=5 false

4-(2)=2(2)+3 2=7 false

4-(3)=2(3)+3 1=9 false

4-(4)=2(4)+3 4=3 false

4-(5)=2(5)+3 5=1 false

4-(6)=2(6)+3 6=1 false

4-(7)=2(7)+3 7=-3 false

Answer 9

this is what i did but dont know how that will help me find the answer

Answer 10

the question says the values are between -3 and 3

Answer 11

4−-3 = 2*-3 + 3.

Answer 12

4-(-3)=2(-3)+3 7=3 false

Answer 13

A. We have two lines: y = 2-x and y = 4x+3

Given two simultaneous equations that are both required to be true.. the solution is the points where the lines cross... Which is where the two equations are equal.. Thus the solution that works for both equations is when

2-x = 4x+3

because where that is true is where the two lines will cross and that is the common point that satisfies both equations.

Answer 14

srry doing two things at once

Answer 15

4−-2 = 2*-2 + 3 ?

Answer 16

@kaitlynfisher You made a mistake it is actually y=4-x and y=2x+3

Answer 17

Solving it graphically: You just insert the functions and see where they cross:

Answer 18

4-(2)=2(2)+3 2=7 false

Answer 19

4−-1 = 2*-1 + 3.

Answer 20

5=1 false

Answer 21

4-0=2*0+3.?

Answer 22

4=3 false

Answer 23

4−1 = 2*1 + 3.

Answer 24

3=5 false

Answer 25

4−2 = 2*2 + 3.

Answer 26

2=7 false

Answer 27

How is this going to help me find the answer?

Answer 28

it seems there are no whole number answers

Answer 29

Then what is the answer?

Answer 30

The answer is \[x=\frac{1}{3}\] So it doesnt work trying with whole numbers.

Answer 31

how do I explain that?

Answer 32

Okay it is x=1/3 how can that be explained?

Answer 33

write it as a decimal, 0.33 repeating, wich means it has a line over the threes

Answer 34

4−(0.33) = 2(0.33) + 3.

Answer 35

You see from this table, that is would be between 0 and 1. Then you would start taking like 1/4, 2/4, 3/4 and then you would find that it is between 1/4 and 2/4, this way you could find the answer using a table.

Answer 36

3.67=3.66 false

Answer 37

Okay whatever what about the part C?

Answer 38

this stupid graph... i dont know @Tommynaiter ?

Answer 39

Okay well I have 2 more questions I will give u a medal now and post it in a different thread can u come and help me with them?

Answer 40

sure. tag me

Answer 41

Okay