For questions 5-7, find the solution to the system of equations by using either graphing or substitution.
5)y=6-x and y=x-2 (1point)
(2,4)
(-4,2)
(4,2)
no solutions
6)y=2x-1 and y=x+3 (1point)
(4,7)
(7,4)
(-7,-4)
no solutions
7) y=4x and y+x=5 (1point)
(-4,1)
(1,4)
(-3,2)
(2,3)
My Answers:
5)C
6)D
7)A
Are these correct Steve or Reiny???
C
A
B
D
for graphing, visit
http://rechneronline.de/function-graphs/
I get C,A,B
Just plug in the numbers to make sure they work!
#5 is correct
#6
2x - 1 = x+3
x = 4 , y = 7
looks like A)
#7
4x = 5-x
5x=5
x=1 , y = 4
looks like B)
You should have checked each of your answers by simply subbing your answer. It must satisfy BOTH equations
ayo is correct for "LESSON 1
Solving Systems of Equations by Graphing" they are correct