help please with number 5
http://prnt.sc/e6n9y2

Question

xXMarcelieXx · Answer

@mathmale

celticcat · Answer

In R^2 x = 4  represents a line parallell yo the y-axis.

celticcat · Answer

in R^3 it represents the vertical plane parallel to the yz plane and 4 units in front of it.

xXMarcelieXx · Answer

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r^2 is 2d right?

celticcat · Answer

yes

celticcat · Answer

r^3 is 3d

xXMarcelieXx · Answer

okay so what does it mean:
what does it represent in R^3 ?

celticcat · Answer

i explained that I#m not too good at diagrams though Check this one out:- pot.pcc.edu/~jkissick/spring/math254evenhomeworkanswers.pdf

sillybilly123 · Answer

equation of a plane [ in $\mathcal R^3$] is $ax + by + cz = d$

where $\langle a,b,c\rangle$ is the plane's normal vector

so pattern match for x = 4

xXMarcelieXx · Answer

hmm i dont think ive learned vectors yet

SemiDefinite · Answer

where in this 3-D space is x always equal to 4?

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y and z can be absolutely anything you like, but x has to be equal to 4

xXMarcelieXx · Answer

hmmm but how you know its yz?