Variable Equations

Which of the following is the correct substitution for y in the equation x = 2y if y = 3z?

• x = 2z

• x = 6z

• x = 3z

• x = z

Tags

A-SSE.A.1

A-CED.A.4

If a = b + c and b = 2d, what is a in terms of d and c?

• a = 2d + c

• a = d + c

• a = 2d - c

• a = d - c

Tags

A-SSE.A.1

A-CED.A.4

Given m = n - p and p = 4q, substitute p in the first equation.

• m = n - 4q

• m = n + 4q

• m = n - q

• m = n + q

Tags

A-SSE.A.1

A-CED.A.4

If x = 5y and y = 2z, what is x in terms of z?

• x = 10z

• x = 7z

• x = 3z

• x = 5z

Tags

A-SSE.A.1

A-CED.A.4

Given k = 3m and m = n + 1, what is k in terms of n?

• k = 3n + 1

• k = 3n + 3

• k = n + 3

• k = 3n - 1

Tags

A-SSE.A.1

A-CED.A.4

If a = 2b and b = 3c, what is a in terms of c?

• a = 5c

• a = 6c

• a = 2c

• a = 3c

Tags

A-SSE.A.1

A-CED.A.4

Given x = y + z and z = 2y, substitute z in the first equation.

• x = 3y

• x = y - 2y

• x = 2y + 2y

• x = y + y

Tags

A-SSE.A.1

A-CED.A.4

If p = 4q and q = r - 2, what is p in terms of r?

• p = 4r - 2

• p = 4r - 8

• p = r - 2

• p = 4r + 2

Tags

A-SSE.A.1

A-CED.A.4

Given s = t + u and u = 3v, what is s in terms of t and v?

• s = t + 3v

• s = t - 3v

• s = 3t + v

• s = t + v

Tags

A-SSE.A.1

A-CED.A.4

If x = 2y and y = 5z, what is x in terms of z?

• x = 10z

• x = 7z

• x = 2z

• x = 5z

Tags

A-SSE.A.1

A-CED.A.4