Find the value of r so the line passes through each pair of points has the give slopes (12,10), (-2,r), m = -4.

Step-by-step explanation:

First, let's start with what we have. If we use here's what we can put in:

Then we can use one of the given points to find the y-intercept. Since the only complete one is (12,10), we'll use that.

So now we have .

Now we can use our other point with the missing y-value and solve for y.

So the missing value is 64.

Hope this helps!

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