To solve this, you can substitute the second equation into the first.
It becomes 2x-(2x+3)=7
Solve from here!
You get -3=7. Not possible. Therefore there is no solution to this system.
System is inconsistent. Hope this helps.
and
are vectors and:
![\vec{u}=14j=0i+14j=[0,14]\\\\ \vec{v}=i+4j=1i+4j=[1,4]](https://tex.z-dn.net/?f=%5Cvec%7Bu%7D%3D14j%3D0i%2B14j%3D%5B0%2C14%5D%5C%5C%5C%5C%0A%5Cvec%7Bv%7D%3Di%2B4j%3D1i%2B4j%3D%5B1%2C4%5D)
is the dot product or scalar product, so:
![\vec{u}\cdot\vec{v}=[0,14]\cdot[1,4]=0\cdot1+14\cdot4=56](https://tex.z-dn.net/?f=%5Cvec%7Bu%7D%5Ccdot%5Cvec%7Bv%7D%3D%5B0%2C14%5D%5Ccdot%5B1%2C4%5D%3D0%5Ccdot1%2B14%5Ccdot4%3D56)
Correct answer is A.
It looks like only A and B, but could be trick question?
The slope of a line parallel is 4 because a parallel line must have the same slope as the original
