I have a graphing problem that says 3x-y=1 I have the values for x but i don't know what y would be

Guest Oct 22, 2013

#1**0 **

[input]solve( 3x-y=1, y)[/input]

[input]plot( 3*x-1, x=-10..10, -10..10 )[/input]

[input]plot( 3*x-1, x=-10..10, -10..10 )[/input]

admin Oct 22, 2013

#2**0 **

Expressing y in the term of x we get y = 3x - 1. Graphically it looks as the linear graph x inclined over Ox axis at an angle which slope coefficient is 3(i.e. the tangent of the angle is 3) and moved 1 unit down the Y.

scrutinizer Oct 22, 2013

#3**0 **

I have a graphing problem that says 3x-y=1 I have the values for x but i don't know what y would be

okay, just say the values of x that you have are 0 and 2

When x = 0 you put 0 in for x and you get

3x-y=1

3*0 - y = 1

so

0 - y = 1

-y = 1

y = -1

So the point is x=0, y=-1 (0,-1)

When x=2 you substitute 2 for x and you get

3*2 - y = 1

6 - y = 1

-y = 1-6

-y = -5

y = 5

So the point is x=2, y=5 (2,5)

etc

okay, just say the values of x that you have are 0 and 2

When x = 0 you put 0 in for x and you get

3x-y=1

3*0 - y = 1

so

0 - y = 1

-y = 1

y = -1

So the point is x=0, y=-1 (0,-1)

When x=2 you substitute 2 for x and you get

3*2 - y = 1

6 - y = 1

-y = 1-6

-y = -5

y = 5

So the point is x=2, y=5 (2,5)

etc

Melody Oct 22, 2013