Asked by Alice

Find the solutions to the system.
y=x^2+5x+6
y=4x+12

A. (2,20) and (-3,0)
B. (2,20) and (-3,-18)
C. (-2,-20) and (-3,-18)
D. no solutions


Find the solutions to the system.
y=x^2-3x-1
y=8x-1

A. (0,-1) and (11,388)
B. (0,-1) and (11,87)
C. (-1,0) and (87,11)
D. no solutions

Hi I'm just very very confused here! I've tried and I just can't figure it out.
Answered by Alice
Hello I just figured them out! the first one is B and the second is A!
Answered by Reiny
What have you done?
Did you set the y of one equation equal to the y of the other?
For the 2nd that is, x^2-3x-1 = 8x-1
x^2 - 11x = 0
did you factor this to x(x-11) = 0 ???
Now the answers are obvious
Answered by Reiny
both are incorrect
Sub in your choices into the easy second equations, does not work!
Answered by hi
what are the answers
Answered by :)
9
A. (2,20) and (-3,0)
10
b. (0, -1) and (11, 87)
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