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Q: How can you use an equation to find an unknown value in a proportional relationship?
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Which equation has the same unknown value as 430 5?

"430 5" is not an equation and it does not have an unknown value. So there can be no equation which has the same unknown value.


What. A proportional relationship exists between x and y. When x=8 the value of y is 14. A) Write an equation for y in terms of x.?

Please dont mind the ”what”


How do you solve a equation using unknown variables?

You don't use unknown variables to solve an equation. The purpose of solving an equation is to find the value of the variable so that it's no longer unknown.


what is the unknown value in the equation?

j


What is a mathematical relationship?

In a linear relationship such as represented in the equation x= b+ay. The relationship between the x and y is a direct variation. This basically means that in the above equation/situation the value of the y variable is proportional to the value of the x variable. In other words the x and y increase or decrease proportionately. If the x value decreases the y value decreases. If the x value increases so does the y value. Now in a quadratic relationship it is a little different in that this kind of function is actually in the shape of a parabola. The equation for this relationship is ax2 + bx + c = y. The parabolic relationship exists when one variable depends on the square of another and this relationship is often expressed in saying that the y variable varies directly with the square of the x variable.


How do you find constant of proportionality?

You need to know the basic relationship between the variables: whether they are directly of inversely proportional to each other - or to a power of the other. Also, you need one scenario for which you know the values of both variables.So suppose you have 2 variables A and B and that A is directly proportional to the xth power of B where x is a known non-zero number. [If the relationship is inverse, then x will be negative.]Then A varies as B^x or A = k*B^xThe nature of the relationship gives you the value of x, and the given scenario gives you A and B. Therefore, in the equation A = k*B^x, the only unknown is k and so you can determine its value.


What is the relationship between the y-intercept of the line and the equation?

It is the value of the equation y = f(x) when x = 0.


How do you find the y intercept of a linear relationship from an equation?

plug in a 0 for the "x" value of the equation, and solve it :D


Is any value that makes an equation or inequality true when substituted form the unknown?

No, it is part of the solution set.


How do you find the missing values or expression?

In every formula, there are numbers and unknown values. What has to be done is to perform the calculation by removing the known value and leaving the unknown. For instance; x+3=5. In this case, one has two values that must be removed to discover the unknown value. So one has to perform the inversion of the formula to solve for the unknown quantity. Therefore, we "flip" the equation. Since X is the unknown, we must use what we have. Therefore we subtract (doing the inverse of the stated equation) 3 from the total of 5. The sum of the answer will give the unknown quantity, in this case 2. To prove that you are right, you "plug in" the value that you have solved for into the missing value space and perform the equation to see if the answer is correct.


How do you determine whether a relationship shown in a table is a proportional relationship?

A proportional relationship is of the form y = kx where k is a constant. This can be rearranged to give: y = kx → k = y/x If the relationship in a table between to variables is a proportional one, then divide the elements of one column by the corresponding elements of the other column; if the result of each division is the same value, then the data is in a proportional relationship. If the data in the table is measured data, then the data is likely to be rounded, so the divisions also need to be rounded (to the appropriate degree).


What is the answer Y and x have a proportional relationship and y 15 when x 3. What is the value of x when y 4?

x is 0.8