Suppose $y$ is proportional to $x$ and $x$ is 4 when $y$ is 26. a. What is $y$ when $x = 8$? $y = 52$ b. What is $y$ when $x = 2$? $y = 13$ c. What is $y$ when $x = a$? $y = 6.5a$ d. What is $y$ when $x = a^2$? $y = 6.5a^2$ e. What is $y$ when $x = 0$? $y = 0$ f. What is $y$ when $x = a + b$? $y = 6.5(a + b)$ g. What is $y$ when $x = 1/w$? $y = \frac{6.5}{w}$
Added by Luisa O.
Close
Step 1
Step 1: Since y is proportional to x, write y = kx for some constant k. Show more…
Show all steps
Your feedback will help us improve your experience
Daniel Carr and 72 other Algebra educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Do question b
Daniel C.
In Problems $3-14,$ write $a$ general formula to describe each variation. $$ y \text { varies directly with } x ; y=2 \text { when } x=10 $$
Functions and Their Graphs
Building Mathematical Models Using Variation
Suppose that y is directly proportional to x and inversely proportional to w. If y=2 when x=7 find y when x=10 and w=8
Khushbu R.
Recommended Textbooks
Elementary and Intermediate Algebra
Algebra and Trigonometry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD