live4dramaoy0yf9 live4dramaoy0yf9

01-01-2018
Mathematics

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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

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

01-01-2018

the value of y when x is -5 is (-10 * -5) 40 = 1.25
y=1.25

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