Let's see... let x be 10. Now, plug in 10 as the input. To solve, y=-7(10)+2 is = to y=-70+2, which is y=-68. So an ordered pair that is and can be a solution of the equation is : (10, -68). To solve, the work should be what input was substituted and simplified.
y=-7x+2
y=-7(10)+2
y=-70+2
y=-68