MathyMcMathsteridn
Answered

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Y varies directly with x. If y = 15 when x = -18, find y when x = 1.6.

Someone please help me! I’ve been stuck on this forever!

Sagot :

Mathstudent55idn

Answer:

y = -4/3

Step-by-step explanation:

A direct variation equation has the form

y = kx

We need to find the value of k for this situation.

For that, we use the given values of x and y and solve for k.

When x = -18, y = 15.

15 = k × -18

k = 15/(-18)

k = -5/6

Now that we know the value of k for this specific situation, we write the equation of direct variation for our case.

y = -5/6 x

Finally, we find y when x = 1.6 using our equation.

y = -5/6 x

y = -5/6 × 1.6

y = -8/6

y = -4/3

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