can you please show me the equation for this problem??
2007-04-22 19:26:03 · 8 answers · asked by thatonegirl 2 in Science & Mathematics ➔ Mathematics
y = 4x
x = 5 -> y = 4(5) = 20
2007-04-22 19:28:23 · answer #1 · answered by *ICEMAN* 3 · 1⤊ 0⤋
y varies directly as x means that y = kx for some constant k
Now use the values given to find k
20 = k5 so k = 4 and you have
y=4x
2007-04-22 19:30:17 · answer #2 · answered by Trini 3 · 0⤊ 0⤋
y=4x
here y is directly proportional to x
if y is 20 then xis 5 if constant is 4 between them
2007-04-22 20:22:39 · answer #3 · answered by Simran 3 · 0⤊ 0⤋
Given:
y directly proportional to x
Solution:
y = ax
20 =a*5
a =20/5 = 4
y =4x -------------->the equation
2007-04-22 19:31:17 · answer #4 · answered by PJA 4 · 0⤊ 0⤋
y = kx
when y=20 & x= 5,
=> 20 = k(5)
=> k = 4
Therefore, equation is y=4x
2007-04-22 19:31:12 · answer #5 · answered by QiQi 3 · 0⤊ 0⤋
x=5, y=20
y=kx
20=k(5)
4=k
direct variation that relates x and y is y=4x.
2007-04-22 19:43:32 · answer #6 · answered by haywoodwhy 3 · 0⤊ 0⤋
y = kx
20 = k x 5
k = 4
y = 4x
2007-04-22 19:36:49 · answer #7 · answered by Como 7 · 0⤊ 0⤋
y = kx
5k = 20
whereas k is the contstant proportionality
2007-04-22 19:57:42 · answer #8 · answered by Sherman81 6 · 0⤊ 0⤋