Without finding the solution, how many solution do the following system has? Justify your solution.

a. 0 = x^2 + 3x -3y -5
0 = 3x - 2y +2

b. y = x^2 + 2x -1
y= 2x -1

help i don't know how to do this...

Question

Without finding the solution, how many solution do the following system has? Justify your solution.

a. 0 = x^2 + 3x -3y -5
    0 = 3x - 2y +2

b. y = x^2 + 2x -1
    y= 2x -1 

help i don't know how to do this...

tkhunny · Answer

Line vs. Parabola

0, 1, or 2

No other choices.

anonymous · Answer

how so?

anonymous · Answer

|dw:1404967666071:dw| The drawing shows you a parabola and three different lines. They will equal each other wher they intersect.

tkhunny · Answer

You could substitute or subtract.

b. y = x^2 + 2x -1
y= 2x -1 

Leads to 0 = x^2

How many Real Solutions are there to that?