Answer:
k = 4
Step-by-step explanation:
The constant of proportionality is found by starting with y = kx, then finding k.
We can just use one point (such as the first one, (1,4) ) and substitute these values of x and y into the equation y = kx, to get:
4 = k x1
k = 4.
So y = 4x
(we can also check that all the other points also satisfy this equation - which they do, as each y value is 4 times the corresponding x value)
Answer:
The amount of that tip is $19.20
Step-by-step explanation:
Turn the percent into a decimal, 20% is now .20.
Multiply- 96×.20= 19.20
Answer:
5 ft.
Step-by-step explanation:
Since 1 foot is 12 inches, and you have to be 60 inches tall, than you would divide 60 by 12. which is 5. So it will be 5ft.
<u>Answer:</u>
x = 4 (extraneous solution)
<u>Step-by-step explanation:</u>

This solution is extraneous. Reason being that even if it can be solved algebraically, it is still not a valid solution because if we substitute back
, we will get two fractions with zero denominator which would be undefined.