Suppose y varies directly with x. Write a direct variation equation that relates x and y. y=-10 when x=-2
If y varies directly with x, we can write the direct variation equation as:
y = kx
To find the value of k, we can use the given information that y = -10 when x = -2.
Substituting these values into the equation:
-10 = k(-2)
Simplifying, we get:
-10 = -2k
Dividing both sides of the equation by -2:
k = 5
Now that we know the value of k, we can rewrite the direct variation equation:
y = 5x