# algebra

posted by .

solve the system of equations using substitution.
y = x + 10
y = 3x

a. (5, 15)
b. (2.5, 7.5)
c. (–15, –5)
d. (–5, –15)

• algebra -

3x = x + 10

Solve for x, then put that value in the second equation (above) to find y. Put both in the first equation to check.

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### Algebra - solving linear equations w/ substitution

The question in the book reads: "Suppose you try to solve a system of linear equations using substitution and get this result. How many solutions does each system have?
2. ### algebra

What is the solution of the system? Solve the system of equations using the substitution method. x-y=-1 5x+4y=-23
3. ### algebra

solve the system of equations using substitution. y = 4x + 2 y = 3x + 6 a. (4, 18) b. (–4, –14) c. (–14, –4) d. (–4, –6)
4. ### algebra

solve the system of equations using substitution. y = 2x + 5 y = 3x a. (–5, –15) b. (5, 15) c. (–15, –5) d. (1, 3)
5. ### algebra

i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y - 1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations …
6. ### algebra

Solve the system of equations using substitution. y = 2x + 3 y = 3x + 1
7. ### algebra

Solve the system of equations using substitution. y = 2x – 10 y = 4x – 8
8. ### algebra

Solve the system of equations using substitution. y = x + 6 y = –2x – 3
9. ### Algebra

I can find no solution to this system of equations. Solve the system of equations using the substitution method 2x + 4y = -2 2x - y = 4
10. ### algebra

solve the system of equations using the substitution method 8x - 9 = y y - 8x = -4

More Similar Questions