Find the values of x for which the denominator is equal to zero for y=3x+5/x-6.
x = −5
x = 6
<h2>x = −6</h2>therefore the answer is
<h2>x = −6</h2>
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Mary lost 30 lbs. Before her diet she weighed 180 pounds. What is the percent of change?
2 answers:
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Given:
The graph of a proportional relationship.
To find:
The constant of proportionality, the value of y when x is 24 and the value of x when y is 108.
Solution:
If y is directly proportional to x, then
...(i)
Where, k is the constant of proportionality.
The graph of proportional relationship passes through the point (5,15).
Substituting x=5 and y=15 in (i), we get
Therefore, the constant of proportionality is 3.
Substituting k=3 in (i) to get the equation of the proportional relationship.
...(ii)
Substituting x=24 in (ii), we get
Therefore, the value of y is 72 when x is 24.
Substituting y=108 in (ii), we get
Therefore, the value of x is 36 when y is 108.