Question

Y = 4x – 5
y = 2x + 3
Is (4, 11) a solution of the system?

Answer 1

(4,11) not answer for the first one

but correct answer for the second

Explanation:

Answer 2

Explanation:

y = 4x – 5

-4x + y = -5

y = 2x + 3

-2x + y = 3

Elimination

-4x + y = -5

-2x + y = 3

__________--

-2x = -8

x = -8/-2

x = 4

Subsitution

-2x + y = 3

-2(4) + y = 3

-8 + y = 3

y = 3 + 8

y = 11