live4dramaoy0yf9
live4dramaoy0yf9 live4dramaoy0yf9
  • 01-01-2018
  • Mathematics
contestada

The value of y varies directly with x, and y = −10 when x = 40. Identify the value of y when x = −5.

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texaschic101
texaschic101 texaschic101
  • 01-01-2018
-10/40 = y / -5
cross multiply
(40)(y) = (-5)(-10)
40y = 50
y = 50/40
y = 5/4 <===
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Richinfo
Richinfo Richinfo
  • 01-01-2018
the value of y when x is -5 is (-10 * -5) 40 = 1.25
y=1.25
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