Answer: The answer would be 1/2
Step-by-step explanation:
Y varies DIRECTLY as x. Find the constant of variation, k, if y = -5x
The first sentence is there for information, the constant is a number( 1,2,3...so on) , so the only number is -5
It is a linear equation meaning equation of a straight line.
its form is y= mx+b, where m is the slope of the line, b is the y intercept when x=0. these info you have to memorize like your life depend on it.
next, y varies directly as x. If y = 15 when x = 60, find y when x = 100
if y= 15, when x=60, then there is a number m such that m*y= 60
or m= 60/y= 60/15 =4
so the equation is y=4x. in this cause, the b=0
so when x=0, y=0
The distance a car travels at a constant speed varies directly as the time the car spends traveling. If a car traveled 105 miles in 3 hours, how far could the car travel in 5 hours?
remember that distance = speed times time.
or d=Vt
so car goes 105 miles on 3 hours
how far it goes in one hour?
if you know that, then you can tell how far it goes in 5 hours.
Hope I made it non tough enough
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