Can somebody help me with (a) and (b)? Thanks! :D

PART A:

Line m: 1/2x + 6

Line n: 1/2x - 3

PART B:

The slope is the same in both lines

see explanation

Step-by-step explanation:

Since the lines are parallel they have the same slopes

Calculate the slope of line m using the slope formula

m =

with (x₁, y₁ ) = (0, 6) and (x₂, y₂ ) = (2, 7) ← 2 points on the line

m = =

Note the line crosses the y- axis at (0, 6) ⇒ b = 6

Thus

y = x + 6 ← equation of line m

Note for line n the line crosses the y- axis at (0, - 3) ⇒ b = - 3

Thus

y = x - 3 ← equation of line n

-1.9

Step-by-step explanation:

He has $1.10 in his printing account. 0.25 each sheet of paper.

47 pages.

He printed both sides so 47:2= 23.5.

Because he printed 2 pages then we divide by 2.

23.5:2=11.75

We cannot print a half of page, so we print 12 pages.

12*0.25=3

1.10-3=-1,9

His printing account will be in minus.