# math

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 (1 point)
(2, 4)***
(–4, 2)
(4, 2)
no solutions
6. y = 2x – 1 and y = x + 3 (1 point)
(4, 7)
(7, 4)
(–7, –4)***
infinite solutions
7. y = 4x and y + x = 5 (1 point)
(–4, 1)
(1, 4) ***
(–3, 2)
(2, 3)

am i right?

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1. All I did was to sub in your choice into each of the equations.
#7 is correct, the other two are not

#5
since both say y = ...
we can substitute:
x-2 = 6-x
2x = 8
x = 4
back in the first:
y = 6-4 = 2 , so (4,2)

#6 , same way ...
2x-1 = x+3
x = 4
then y = 8-1 = 7
solution: (4,7)

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2. thx

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3. c
a
b
d
solving systems of equations by graphing

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