A pair of equations is shown below.

3x − y = 9
y = −2x + 11

If the two equations are graphed, at what point do the lines representing the two equations intersect?
A. (4, 3)
B. (3, 4)
C. (9, 11)
D. (11, 9)

Question

A pair of equations is shown below.

3x − y = 9
y = −2x + 11

If the two equations are graphed, at what point do the lines representing the two equations intersect?
A. (4, 3)
B. (3, 4)
C. (9, 11)
D. (11, 9)

triciaal · Answer

one approach
from eqn 1 what is y = 
when the graph meet y = y 
set y from eqn 1 = y from eqn 2   solve for x 
what is the corresponding value for y using either expression for y

triciaal · Answer

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