Question

the solution to the system of equations y= 2x and y = -x + 3 is
a)2,1
b)(-1,2)
c)2,-1)
d)(1,2)

Answer 1

D.

to solve for x:

Since y= 2x you would plug in the 2x where the y is making it 2x=-x +3.
Then add an x to both sides to get all the x's on one side of the equation. So it would then look like
3x=3. Divide both sides by 3 to get the x alone and you now have x=1

then to solve for y you plug the x value in where the x's are. y=-1+3. Solve, and y= 2.

Therefore the answer is D(1,2)

Answer 2

y=-x^2+3 and y=2x