I think it is a direct variation because if you divide 9/3, 27/3, 39/13, and 60/20 it will all give you the same number which is 3.
I hope this helps.
Answer:
and 
.
Step-by-step explanation:
To this relation be a function, the horizontal coordinates can't be equal. So, let's find the value of 
that makes those coordinates equal.
Using the null factor property, we have
Therefore, the given relation is not a function when and .
Answer:
Look below
Step-by-step explanation:
So you know a point and the slope, now you can substitute the values of the point for the equation.
Answer:
-2
Step-by-step explanation:
We can use the slope formula to find the slope
m = ( y2-y1)/(x2-x1)
= ( 3-9)/(0- -3)
= (3-9)/(0+3)
= -6/3
= -2
Answer: 145
Step-by-step explanation:
Given:
58 = 40%(x)
Step 1: Turn 40% into a decimal and divide it to the other side
When turning a percentage into a decimal, the decimal point has to be moved two places to the left. This means that 40% will be turned into 0.4.
58 = 0.4(x)
Divide 0.4 over to the other side.
58/0.4 = 0.4/0.4(x)
0.4 is the same as 4/10. This means that 58/1 is divided by 4/10. When dividing a number by a fraction, you invert the fraction and multiply it by the number.
58/1 * 10/4 = 580/4 = 145
145 = x
This is your answer
