On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite direction. The

number b varies directly with the number a. For example b = 2 when a = - 2. Which equation represents this direct

variation between a and b?

b = - a

-b = - a

b - a = 0

b (-a) = 0

Question

Yasmine Welch

Mathematics

11 October, 22:22

On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite direction. The

number b varies directly with the number a. For example b = 2 when a = - 2. Which equation represents this direct

variation between a and b?

b = - a

-b = - a

b - a = 0

b (-a) = 0

+4

Answers (1)

Know the Answer?

Lillian Delacruz · Answer 1

b=-a

Step-by-step explanation:

we know that b is located the same distance from 0 as another number, a, but in the opposite direction.

so the sum of the two numbers equal zero

a+b=0

a=-b or b=-a

On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite direction. Thenumber b varies directly with the number a. For example b = 2 when a = - 2. Which equation represents this directvariation between a and b?b = - a-b = - ab - a = 0b (-a) = 0