Question

Which shows three ordered pairs that are all solutions of the equation y = x + 7?



A.
(0, 7), (2, 9), and (3, 11)


B.
(0, 7), (2, 9), and (3, 10)


C.
(1, 7), (2, 9), and (3, 10)


D.
(1, 8), (2, 9), and (3, 11)

Answer 1

Substitute the x and y values into the equation y = x + 7 and see if satisfies the equation.

Answer 2

B. works by inspection.

Answer 3

For example, is (0,7) a solution to y = x + 7?
put x = 0 and see if you get y = 7.
y = 0 + 7 = 7. So (0.7) is a solution. But test the other two in A to see if all three are solutions. Then test the others.