Pls help me with this

1) -3

2) -10

3) y = mx + c

4) y = -2x + 4

5) Ax + By = C

6) y = -5x/2 - 4

Step-by-step explanation:

1) The slope intercept form of a linear equation is y = mx + c, where m is the slope. so from the formula we can say that m = -3

2) From the slope-intercept formula y = mx + c, where c = y-intercept. we can say that c = -10 on the given equation.

3) y = mx + c

4) slope-intercept formula is y = mx + c. so we have to change the above equation to the slope equation.

12x - 6y = 24

make y the subject

-6y = 12x - 24

divide both sides by -6

-6y/-6 = 12x/-6 - 24/-6

y = -2x + 4

5) Ax + By = C

6) Apply the same method used in number 4

8 + 2y = -5x

2y = -5x - 8

divide both sides by 2

2y/2 = -5x/2 - 8/2

y = -5x/2 - 4

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

it would open into a square depending on the type of envelope i’m not sure about the second part