Direct variation in mathematics is when two numbers are written in an equation where one of the numbers multiplied by a constant term to equal the other.
In the table in the equation, we see direct variation.
<u>X</u> <u>Y
</u><u></u>1 7
2 14
3 21
4 28
We can find the constant of the variation by dividing y by x. This constant should remain the same for all terms of x in the table with their corresponding y values.
y/x
7/1=7
14/2=7
21/3=7
28/4=7
As we can see, the values in the table all share a direct variation between x and y with the value 7.
This can be expressed in an equation: y = 7x.
Answer:
A. 13
Step-by-step explanation:
YZ + XY = XZ
YZ = XZ - XY = 21 - 8 = 13 units
Answer:
21
Step-by-step explanation:
Use PEMDAS
P ---> Parenthesis
E ----> Exponents
M & D -------> Multiplication & Division
A & S ------> Addition & Subtraction
5 + 4*(8 - 6)² = 5 + 4*(2)²
= 5 + 4*4
= 5 + 16
= 21
The answer would be X=6, -16
