Download presentation

Presentation is loading. Please wait.

1
**Is this a direct variation?**

Course 2 Identifying DV Is this a direct variation? x y -2 -4 -1 1 2 4 x y 1 6 2 12 3 18 4 24 x y 3 6 5 10 7 14 4 8 12

2
**Is this a direct variation?**

Course 2 Identifying DV Is this a direct variation?

3
**QUESTION How are direct variation problems solved using the equation?**

Course 2 DV Problems Insert Lesson Title Here QUESTION How are direct variation problems solved using the equation?

4
**To solve problems: DV Problems**

If there is more than one set of data, make a t-table with the given information. Using the equation y = kx or the ratio k = y/x, substitute the known values. 3. Solve for k. Course 2

5
**DV Problems Substitute the k value into direct variation equation.**

Solve for the value of y. Course 2

6
**Find an equation of direct variation.**

Course 2 DV Problems Example: Find an equation of direct variation. y is when x is 4

7
**Insert Lesson Title Here**

Course 2 DV Problems Insert Lesson Title Here Example: x varies directly with y. If y = 8 when x = 12, what is the value of y when x = 15? x y 12 8 15 ?

8
**QUESTION How are direct variation problems solved using proportion?**

Course 2 DV Problems Insert Lesson Title Here QUESTION How are direct variation problems solved using proportion?

9
**DV Problems 1. Substitute given values into the proportion**

2. Solve for the value of y using cross product. Course 2

10
Course 2 DV Problems Example: x varies directly with y. If y = when x = -2.5, what is the value of y when x = -8?

11
**Insert Lesson Title Here**

Course 2 DV Problems Insert Lesson Title Here Practice Problems Find an equation of the direct variation when y is -64, x is 4. Find an equation of the direct variation when y is 6.3, x is 0.7 Find an equation of the direct variation when y is ½ , x is ¼ . y = -16x y = 9x y = 2x

12
**Insert Lesson Title Here**

Course 2 DV Problems Insert Lesson Title Here Practice Problems x varies directly with y. If x = 5 when y = 4.45, what is the value of y when x = 7.12? x varies directly with y. If x = -2 when y = -3/2, what is the value of y when x = -4? x varies directly with y. If x = 5 when y = 4.5, what is the value of y when x = 1.5? y = y = -3 y = 1.35

13
**Is this a direct variation?**

Course 2 Identifying DV Is this a direct variation? x y -2 -4 -1 1 2 4 x y 1 6 2 12 3 18 4 24 x y 3 6 5 10 7 14 4 8 12

14
**Is this a direct variation?**

Course 2 Identifying DV Is this a direct variation?

Similar presentations

Presentation is loading. Please wait....

OK

Direct Variation Section 1.9.

Direct Variation Section 1.9.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google