Question

Line A is represented by the equation given below:

x + y = 4

What is most likely the equation for line B, so that the set of equations has infinitely many solutions?
4x + 4y = 4 4x + y = 4 2x + 2y = 8 x + y = 8

Answer 1

To have infinite solutions, the slope and y intercept have to be the same

Answer 2

a?

Answer 3

The simplified way is y=-x+4

Answer 4

so its a or b

Answer 5

A

Answer 6

Medal for helping?

Answer 7

The work of a student to solve a set of equations is shown:

Equation 1: m = 8 + 2n
Equation 2: 3m = 4 + 4n




Step 1:
−3(m) = −3(8 + 2n) [Equation 1 is multiplied by −3.]
3m = 4 + 4n [Equation 2]


Step 2:
−3m = −24 − 6n [Equation 1 in Step 1 is simplified.]
3m = 4 + 4n [Equation 2]


Step 3:
−3m + 3m = −24 − 6n + 4n [Equations in Step 2 are added.]


Step 4:
0 = −24 − 2n


Step 5:
n = −12


In which step did the student first make an error?
Step 4 Step 3 Step 2 Step 1

Answer 8

Step 3

Answer 9

Variable g is 8 more than variable w. Variable g is also 4 less than w. Which pair of equations best models the relationship between g and w?

g = w − 8
g = w + 4
w = 8g
w = g − 4
g = w + 8
g = w − 4
w = 8g
w = g + 4

Answer 10

g = w + 8
g = w − 4