The equation y = 11x shows that a boat travels at a speed of 11 km/h.

which ordered pair satisfies the equation y = 11x?

a.
(0, 11)

b.
(1, 12)

c.
(2, 22)

d.
(11, 1)

Best lets sub and find out...
y = 11x

(0,11)
11 = 11(0)
11 = 0 (incorrect)
not the first one

(1,12)
12 = 11(1)
12 = 11 (incorrect)
not the second one

(2,22)
22 = 11(2)
22 = 22 (correct)
Here it is :)

let me go ahead and check the last one as well...
(11,1)
1 = 11(11)
1 = 121 (incorrect)

Your answer is C. (2,22)

When you get problems like these, just sub your set of points (x,y) into the equation to see which one satisfies the equation.