How do i find the equation? (with explanation ? )

First find the slope of the equation you are given

5x-4y=10
-4y=-5x+10
y=5/4x+10

So your slope is 5/4

Parallel lines have the same slope so the slope of line q is 5/4

Now use the point-slope formula to find the equation

y-(-7)=5/4(x-12)
y+7=5/4x-60/4
y+7=5/4x-15
y=5/4x-8

Line q’s equation is y=5/4x-8

A = 8 units
B = 3 units
C = 4 units

The reason why these measures are the same as the measures in the rectangular prism is that a rectangular pyramid is naturally 1/3 the volume of a rectangular prism that has the same altitude, base measures. Here are the formulas to compare.

Formula for Volume of Rectangular Prism= Base x Altitude
Formula for Volume of Rectangular Pyramid = (1/3) x Base x Altitude