Find the slope of a line parallel to each given line. 17) y = 4x - 5
18) y = 2x + 3
19) 4x - 3y = -15
20) 5x+2y=6

17) the parallel slope is 4x.

18) the parallel slope is 2x.

19)the parallel slope is -4/-3x.

    because 4x-3y=-15

                    -4x      -4x

                     - 3y=-4x-15

                     -3      -3    -3

                        y=-4/-3-5

20)the parallel slope is -5/2x

5x+2y=6

     -5x   -5x

    2y=-5x+6

    2      2    2

y=-5/2x + 3

Step-by-step explanation:

don´t forget to brainllest!:)

Let's solve this system of equation by substitution, alright?
A)
Step 1
Substitute "y= 4x-1"
[4x-1=8x-9}
Step 2
Isolate x for 4x-1 = 8x-9
• 4x-1 = 8x-9
Add 1 to both sides
• 4x-1+1 = 8x-9+1
Simplify
• 4x = 8x-8
Subtract 8x from both sides
• 4x-8x = 8x-8x-8
Simplify
• -4x = -8
Divide both sides by -4
• -4x/4 = -8/4
Simplify
• x = 2

For y = 4x-1
Substitute x=2
Therefore; y = 4(2)-1
                   y= 8-1
                   y= 7

Solution: x = 2, y = 7
B) The lines representing the two equations would intersect at (2,7). This is true because both coordinate points fulfill the equations shown above