Suppose y varies directly with x, and y = 10 when x = –3. What direct variation equation relates x and y? What is the value of y when x = –1?

Question

(1 point)
Responses

y = –3 over 10x;3 over 10
y = – Image with alt text: 3 over 10 x; Image with alt text: 3 over 10

y = 1 over 10x; –3 over 10
y = Image with alt text: 1 over 10 x ; – Image with alt text: 3 over 10

y = 10 over 3x; –10 over 3
y = Image with alt text: 10 over 3 x ; – Image with alt text: 10 over 3

y = –10 over 3x; 10 over 3

Answer 1

The correct direct variation equation that relates x and y is:

y = (3/10)x

To find the value of y when x = -1, we substitute -1 for x in the equation:

y = (3/10)(-1)
y = -3/10