Which ordered pair is a solution of the equation y=x-2?
Simply plug in the numbers. We'll start with the first one (3,1). Y = 1, and X = 3, so 1 = 3 - 2.
3 - 2 = 1, which makes the ordered pair (3,1) a solution to the equation.
For the next one, do the same thing, just plug in your options.
y = 4x
We will do (-4,-1) first. So plug those in to the equation y = -1 and x will = -4
-1 = 4*-4, which would be -1 = -16, which isn't a solution to the ordered pair. Let's try (-1,-4).
y = -4, x = -1
-4 = 4*-1, which would = -4. Which is the solution to our equation! So the answer would be (-1,-4).
For the last one, do the SAME thing again.
y = -7x + 2
Plug in (8,-54) into the equation
-54 = -7*8 + 2
-7 * 8 = -56
-56 + 2 = -54
Which would make the solution (8,-54) the solution to the equation.