# algebra 1

Suppose y varies directly as x and that y = 21 when x = 3. Find the value of y when x = 5.

Would I be wrong if I said y = 35? In using y = kx with the 21 and the 3 k = 7. So if y = 35 and x = 5 then k = 7. Am I correct or am I way off course?

1. 👍
2. 👎
3. 👁
1. You are correct. Asked the experts my two teenagers

1. 👍
2. 👎
2. I agree

1. 👍
2. 👎

## Similar Questions

1. ### variation

Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s

2. ### Algebra worksheet

Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've

3. ### Algebra 1

suppose y varies directly with x and y = 14 when x = -4 what is the value of y when x = -6

4. ### math

Suppose T varies directly as the 3/2 power of x. When x=16, T=160. Find T when x=4

1. ### Math

1. Suppose y varies directly with x and, y=15 and x=5. Write a direct variation equation that relates x and y. What is the value of y when x=9? I need a little help on how to figure out how to write this out. Any help will be

2. ### algebra

Problem Page The volume V of a fixed amount of a gas varies directly as the temperature T and inversely as the pressure P. Suppose that V=42 cm to the 3,when T=84 kelvin and P= 8kg over cm squared. Find the temperature when V=74

3. ### Math

Suppose y varies directly with x and y=12 when x=6. Write an equation realting x and y. Please help, do not understand.

4. ### Algebra 1

Suppose y varies directly with x and y = 24 when x =8. What is the value of y when x = 10?

1. ### Direct Variations

Suppose y varies directly with x. Write a direct variation equation that relates x and y. y=10.4 when x=4 y=3.4x* y=3.8x y=3.2x y=2.6x

2. ### Algebra 1

1. Suppose y varies directly with x, and y = 24 when x = 8. What is the value of y when x = 10? A. 10 B. 30** C. 80 D. 240 2. What is an equation in slope-intercept form for the line that passes through the points (1, –3) and

3. ### Algebra

Suppose that Y varies directly with X, and Y=4 when X=16 (a) Write a direct variation equation that relates X and Y (b) Find Y when X=3

4. ### math

a variable y varies directly as the square root of a varies x,and equals 6 when x=4 find y when x=25