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Solve the following system. y = x + 3 4x + y = 18 (6, 3) (3, 6) (−3, 6) (3, −6)
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Solve the following system.

y = x + 3
4x + y = 18

(6, 3)

(3, 6)

(−3, 6)

(3, −6)

User Friso Kluitenberg
by
7.2k points

2 Answers

2 votes
the answer is 3,6 this was easy
User Altonymous
by
7.6k points
4 votes
y = x + 3 . . . (1)
4x + y = 18 . . . (2)

Putting (1) into (2) gives
4x + x + 3 = 18
5x = 18 - 3 = 15
x = 15/5 = 3
x = 3
y = x + 3 = 3 + 3 = 6

Solution = (3, 6)
User Maurix
by
9.5k points
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