Suppose that y varies directly with x, and y= 10 when x-5 (a) Write a direct...

Question

Question

math algebra

Answer 1

Answer #1

Y varies directly with X

so

YOX

Y = kX

here K is constant .

given that y=10 , when x=-5

so substitute y =10 and x=-5 in above equation and find K

10 = k* -5

10 K = = -2

so equation is

Y = -2X

b)

put x=4 in above equation and find y

Y = -2*4 = -8

so answer is

Y = -8

Answer 2

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