Question

1) Which ordered pair is a solution of the equation y = x - 2?

A- (3,1)
B- (1,3)
C- (-1,3)
D- (3,-1)

2) Which ordered pair is a solution of the equation y = 4x?

A- (1,3)
B- (-1,-4)
C- (-4,-1)
D- (1,-4)

3) Which ordered pair is a solution of the equation y = -5x + 4?

A- (2,14)
B- (5,-29)
C- (3,-19)
D- (5,-21)

Answer 1

1) A-, because, when substituted, we get 1 = 3 - 2, which is correct.

2) B-, because again, when you substitute in x and y, you get -4 = -1 × 4, which is correct.

3) D-, because when you do -5 × 5 you get -25, and -25 + 4 = -21, which is the y value.

I hope this helps!

Answer 2

1) A- (3, 1)

2) B- (-1, -4)

3) D- (5,-21)

Explanation:

The simplest way to solve this question is simply put the values of x from each ordered pair given in the option, after solving if we get the same value of y given in that ordered pair, Then that set of ordered pair is our answer.

1) Taking first option (3, 1)

If we put x = 3 in y = x - 2, we get y = 1.

Thus, (3, 1) is the correct option.

Similarly we can check other options.

2) Taking second option (-1, -4)

If we put x = -1 in y = 4x then we get y = -4.

Thus, (-1, -4) is correct option.

3) Taking last option (5,-21)

If we put x = 5 in y = 5x + 4 then we get y = -21.

Thus, (5, -21) is correct option.