Question

Suppose the y varies directly with x and y=8 when x=-6 what direct variation equation relates x and y what is the value of y when x=-2

A. Y=-0.75x,1.50
B. Y=-1.33x,2.67
C.y=1.33x,2.67
D. Y=0.13x, -0.25

Answer 1

Answer:

B

Step-by-step explanation:

Given that y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition that y = 8 when x = - 6, thus

k = $\frac{y}{x}$ = $\frac{8}{-6}$ = - $\frac{4}{3}$ ≈ - 1.33

y = - $\frac{4}{3}$ x ← equation of variation

When x = - 2, then

y = - $\frac{4}{3}$ × - 2 = $\frac{8}{3}$ ≈ 2.67

Answer 2

The answer is b !!!!i think