Which ordered pair is a solution of y=2x+5?
A. (-2,1)
B. (-1,4)
C. (1,6)
D. (3,10)
To check if an ordered pair is a solution to an equation, we substitute the given values of x and y into the equation and see if it is true.
Let's check each option:
A. (-2,1):
y = 2x + 5
1 = 2(-2) + 5
1 = -4 + 5
1 = 1
This is true, so (-2,1) is a solution.
B. (-1,4):
y = 2x + 5
4 = 2(-1) + 5
4 = -2 + 5
4 = 3
This is not true, so (-1,4) is not a solution.
C. (1,6):
y = 2x + 5
6 = 2(1) + 5
6 = 2 + 5
6 = 7
This is not true, so (1,6) is not a solution.
D. (3,10):
y = 2x + 5
10 = 2(3) + 5
10 = 6 + 5
10 = 11
This is not true, so (3,10) is not a solution.
Therefore, the answer is A. (-2,1)