Which is a solution to the equation y = 2x – 5?
a.
(3, 11)
b.
(2, 1)
c.
(1, –3)
d.
(5, –5)

The correct answer is C. (1, -3). 

In the brackets, the first number refers to x, and the second to y (like when you write coordinates). 

So we can check what is y ineach of the options and compare whether both of the sided of the equasion are equal:
A. 2x-5=-1, should be 11, false
B. 2x-5=4-9=-5, should be 1, false
C. 2x-5=2-5=-3, should be -3, correct
D. 2x-5=10-5=5, should be -5, false