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Which value is a solution of the equation 5 – 4x = –3

Which value is a solution of the equation 5 – 4x = –3

0
2
-3
1/4

Which ordered pair is a solution of the equation y = 4x
(1, 3)
(–1, –4)
(–4, –1)
(1, –4)

Respuesta :

JcAlmighty
Q1. The answer is 2

5 – 4x = –3

Subtract 5 from both sides:
5 - 4x - 5 = -3 - 5
- 4x = -8

Divide -4 from both sides
-4x/-4 = -8/-4
x = 2


Q2. The answer is (–1, –4)

y = 4x
Substitute all choices:
(1, 3)
3 = 4 * 1
3 = 4
INCORRECT

(–1, –4)
-4 = 4 * (-1)
-4 = -4 
CORRECT

(–4, –1)
-1 = 4 * (-4)
-1 = -16
INCORRECT

(1, -4)
-4 = 4 * 1
-4 = 4
INCORRECT

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