You will have to try to substitute the numbers shown in the table with the 4 equations. And see which equation satisfies all the expressions in the table.
y = -2x + 3
Sub x = 5 and y = -7, -7 = -2(5) + 3 -7 = -10 + 3 -7 = -7 (x=5 and y=-6 satisfies the equation y=-2x+3)
Sub x=3 and y=-3, -3 = -2(3) + 3 -3 = -6 + 3 -3 = -3 (x=3 and y=-3 also satisfies the equation y=-2x+3)
