Mathematics
reedreed
2020-04-20 22:36:45
When x is 2.25, y is 6.75 y varies directly with x write the direct variation equation in the form y = kx. direct variation equation find y when x is 4.2. when x = 4.2, y =?
ANSWERS
uchenna
2020-04-21 03:50:39

well  when x=2.25 y=6.75  y=kx  that means if you put x= 2.25 you will get y=6.75 in this relation (y=kx) 6.75= 2.25k k=6.75/2.25 =3  the rel. is y=3x whe x=4.2  y= 3*4.2 =12.6 #

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