On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite direction. The numb
er b varies directly with the number a. For example b = 2a equals negative 2 and StartFraction 3 Over 4 EndFraction. when a = –2a equals negative 2 and StartFraction 3 Over 4 EndFraction.. Which equation represents this direct variation between a and b?
Multiply 2 by 4. 8+4•3-30•2 Multiply 4 by 3 8+12-30•2 Multiply-30 by 2 8+12-60 Simplify by adding and subtracting: Add 8 and 12 20-60 Subtract 60 from 20 -40
