Question

Which of the following are ordered pairs for the equation y = -2x - 3?

(0,-3) (-1,-4) (-1,-5)


(0,-3) (1,-5) (-1,-1)


(0,-3) (1,4) (-1,-5)


(0,-3) (1,-4) (-1,-5)

Answer 1

b. (0,-3) (1,-5) (-1,-1)

Explanation:

we only have to replace the first part of the parenthesis by x and the second part by y, and see if equality is met

y = -2x - 3

a.

(0,-3) (-1,-4) (-1,-5)

y = -2x - 3

-3 = -2(0) -3

-3 = -3

-4 = -2(-1) - 3

-4 = 2 -3

-4 = -1

WRONG OPTION

b.

(0,-3) (1,-5) (-1,-1)

y = -2x - 3

-3 = -2(0) -3

-3 = -3

-5 = -2(1) - 3

-5 = -2 -3

-5 = -5

-1 = -2(-1) -3

-1 = 2 -3

-1 = -1

CORRECT OPTION

c.

(0,-3) (1,4) (-1,-5)

y = -2x - 3

-3 = -2(0) -3

-3 = -3

4 = -2(1) -3

4 = -2 -3

4 = -5

WRONG OPTION

d.

(0,-3) (1,-4) (-1,-5)

y = -2x - 3

-3 = -2(0) -3

-3 = -3

-4 = -2(1) -3

-4 = -2 -3

-4 = -2

WRONG OPTION