7. (08.03 lc)
a set of equations is given below:

equation e: a = 5b + 1
equation f: a = 3b + 4

which statement describes a step that can be used to find the solution to the set of equations? (1 point)

equation f can be written as 5b + 1 = 3b + 4.
equation f can be written as b + 1 = 3b + 4.
equation f can be written as a = 3(a – 1) + 4.
equation f can be written as a = 5(a – 4) + 1.
8. (08.03 lc)
a set of equations is given below:

equation c: y = 7x + 12
equation d: y = 7x + 2

how many solutions are there to the given set of equations? (1 point)

one solution
two solutions
infinitely many solutions
no solution
9. (08.03 mc)
two equations are given below:

m + 5n = 20
m = n – 4

what is the solution to the set of equations in the form (m, n)? (1 point)

(3, 7)
(0, 4)
(5, 1)
(2, 6)
10. (08.03 mc)
a system of equations is shown below:

y = 3x – 7
y = 2x + 1

what is the solution to the system of equations? (1 point)

(8, 17)
(–8, 17)
(–8, –17)
(8, –17)
11. (08.05 lc)
a student is trying to solve the system of two equations given below:

equation p: y + z = 6
equation q: 5y + 9z = 1

which of the following is a possible step used in eliminating the y-term? (1 point)

(y + z = 6) • 9
(y + z = 6) • –5
(5y + 9z = 1) • 9
(5y + 9z = 1) • 5