Homework!?

Question

2x=y+2

Answer 1

wow that's easy!
x=1

Answer 2

What is really the problem?
Anyway, there are at least two possibilities:
A) You were asked to find the slope and y-intercept
Solution:
Rewrite the equation (flip flop):
y + 2 = 2x
Subtract 2 from both sides of the equation:
y + 2 - 2 = 2x - 2
Perform algebraic addition:
y + 0 = 2x - 2
y = 2x -2 (Final Equation)
Slope intercept general equation:
y = mx + b
Where:
m = slope
b = y-intercept
Therefore:
m = 2
y-intercept = -2.
B) You were asked to plot the equation
Refer to the final equation above:
y = 2x - 2
Now assign values for x and solve for y to get your points.
If x = 0, then y = -2
If x = 1, then y = 0
If x = 2, then y = 2
If x = 3, then y = 4
If x = 4, then y = 6
I have provided you with many examples although only two points determine a straight line.
Your plot of the straight line should pass through x = 1 and y = -2.
The straight line is in quadrant II, III, and IV.
The acute angle at the y-axis is Tangent 1/2 or Sine (1/sq. rt. of 5).
The hypotenuse is equal to the square root of 5.
Look for the angle having a tangent of 0.500 or a sine of 0.447
This angle should be less than 30 degrees because sine 0.5 equals 30 degrees.
Remarks:
An equation in the first degree is a straight line, a second degree is parabolic, a third degree has two inflection points, a fourth degree has three inflection points, a fifth degree has four inflection points. Can you see the relationships (degree of the equation minus one equals the inflection points)?
If you have other questions please feel free to email me.
Good luck in your mental exercises!

Answer 3

What are the instructions that go with the problem? Are you studying linear equations? I will assume so, but correct me if you are not.

y = mx + b is the standard form that you are wanting to get to find the slope (m) and the y intercept (b).

Solve for y.

2x = y + 2

y + 2 = 2x (flipped the equation around putting y on the left)

y = 2x - 2 (Subtracted both sides by 2)

m = 2; b = -2 (When compared to the standard form, this is what we find)

Slope = 2
y int = -2

Answer 4

X= 45.988773

Y=39879882938579875983759823759283.0000005

Next time you want to cheat on your homework, try telling people the rest of the question.

Answer 5

x=2y+1
y=2x-2

Answer 6

Actually x=2 doesn't it??

Answer 7

thats the easiest algebra problem I've ever seen, I'm shocked anyone would actually help you.

Answer 8

im guessing it is linear equation
y=2x-2