Question

The value of y varies directly with x, and y = -18 when x = 6.

Find y when x = -8.

Answer 1

y varies directly with x so
\[y = kx\]
when y = -18 x = 6
\[-18 = 6k\]
\[\frac{-18}{6} = k\]
\[-3 = k\]
what is y when x = -8
\[y = kx\]
\[y = (-3)(-8)\]
\[ y = -3 \times -8\]
got it?

Answer 2

Yes Thanks

Answer 3

\[\huge \color{maroon}{\mathtt{\text{<tips imaginary hat>}}}\]