2 years ago

Solve the system by substitution. y=4x-9 y=x-3

Mathematics

2 answers:

mixer [17]2 years ago

7 0

X-3=4x-9
X=4x-9+3
X=4x-6
X+6=4x |-x
6=3x |:3
X=2

alex41 [277]2 years ago

3 0

Answer:

(2, -1)

Step-by-step explanation:

Given

y = 4x - 9
y = x - 3

Solving

Substitute the value of one of the y values from the other equation
4x - 9 = x - 3
3x = 6
x = 2
y = 2 - 3
y = -1
⇒ (2, -1)

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