Sagot :
Direct Proportion
y is directly proportional to x. When y=124 x=8. Work out the value of y when x=4.
[tex]\underline{\mathcal{INFO:}}[/tex]
- Direct proportion can be written as y = kx.
[tex]\boxed{\tt{Solution:}}[/tex]
- y = 124, x = 8
- y = kx
- 124 = k · 8
- 1/8[124 = k · 8]1/8
- 124/8 = k
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- y = ?, x = 4, k = 124/8
- y = kx
- y = (4)(124/8)
- y = 62
[tex]\huge\boxed{\tt{ANSWER:}}[/tex]
- The value of y is 62.
[tex]\large {\mathbb{PROBLEM}:} [/tex]
y is directly proportional to x. When y=124 x=8. Work out the value of y when x=4.
[tex]\: \: \:[/tex]
[tex]\large {\mathbb{SOLUTION}:} [/tex]
[tex] \bold{GIVEN}[/tex]
- [tex]\tt \small{y = 124}[/tex]
- [tex]\tt \small{x = 8,x = 4}[/tex]
- [tex]\tt \small{y = ?}[/tex]
[tex] \bold{FORMULA}[/tex]
[tex] \tt \small{y = kx}[/tex]
[tex] \bold{COMPUTE}[/tex]
- [tex] \tt \small{y = 124*8 ÷ 4}[/tex]
- [tex] \tt \small{y = 15.5 ÷ 4}[/tex]
- [tex] \tt \blue{y = 62}[/tex]
[tex]\: \: \:[/tex]
[tex]\large {\mathbb{ANSWER}:} [/tex]
Therefore the value of y is 62.