Question

the value of y varies directly with x, and y = 5 when x = -1. what is y when x = -5? y = ? remember: y = kx

Explanation:

Step1: Find constant k

Substitute $y=5$, $x=-1$ into $y=kx$:
$5 = k(-1)$
Solve for k: $k = \frac{5}{-1} = -5$

Step2: Substitute k and new x

Use $k=-5$, $x=-5$ in $y=kx$:
$y = (-5)(-5)$

Answer:

25