Sunday

January 25, 2015

January 25, 2015

Posted by **Anonymous** on Thursday, September 29, 2011 at 1:13pm.

Write an inverse variation equation. If y varies inversely with x and y=2 when x=4….

a. Find K.

b. Write a general equation.

c. Use your equation to find y when x=8

Draw a chart to show at least 5 ordered pairs that are on the graph. (Hint: don’t pick all positive numbers)

x- y-

- algebra -
**Steve**, Thursday, September 29, 2011 at 3:09pmSince you know about k, you must surely have grasped the idea that if y varies directly with x, then

y = kx

You know that y=2 when x=4, so

2 = k*4

k=1/2

... the rest should be easy. Just use your fancy new equation.

y = x/2

8/2 = 4, so y=4 when x=8

x: -21 -3.4 0 π 6

y: -21/2 -1.7 0 π/2 3

**Answer this Question**

**Related Questions**

algebra - Could someone show me how to solve this joint variation problems? Y ...

algebra - I have no clue what to do here can you tell me how to figure this? If ...

Algebra - I would appreciate the steps to the answer please... Suppose that y ...

Algebra - Suppose that y varies inversely with x, and y = 0.2 when x = 2. What ...

Check my answers. Algebra - Can you please check my answers? Thanxs! Write an ...

variation - Can you please check my answers? Thanxs! Write an equation that ...

variation - Can you please check my answers? Thanxs! Write an equation that ...

Variation-Check Problems - Can you please check my answers? Thanxs! Write an ...

math - If y varies inversely as x,find the inverse variation equation for the ...

Variation-Questions - I have some questions that I dont understand and need to ...