Answer:
C and D
Step-by-step explanation:
To determine which pairs are solutions, substitute the coordinates into the left side of the equation and if equal to the right side then they are solutions.
(7, - 2)
2(7) + 10(- 2) = 14 - 20 = - 6 ≠ 12 → (7, - 2) is not a solution
(- 5, - 4)
2(- 5) + 10(- 4) = - 10 - 40 = - 50 ≠ 12 → (- 5, - 4) is not a solution
(4, 
)
2(4) + 10() = 8 + 4 = 12 → hence solution
(- 5, 
)
2(- 5) + 10( ) = - 10 + 22 = 12 → hence solution
Answer:
The equation: 3 + x = 7. will be false if any number except 4 is substituted for the variable. The value of the ... Example 2 Find the solution of each equation by inspection. a. x + 5 = 12 b. 4 · x = -20 ... 3x + 3 = x + 13, 3x = x + 10, 2x = 10, and x = 5.
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
a
Answer:
e
Step-by-step explanation:
ef
