Aparking garage charges $5.50 to park for 4 hours and $7.75 to park for 7 hours. if the cost is a linear function of a number of hours parked, what is the cost to park for 3 hours?

The cost per hour of parking is the gradient of the line and can be determined by:
(7.75 - 5.50) / (7 - 4)
= $0.75 per hour parking
5.50 = 0.75 x 4 + c
c = $2.50
The equation is:
y = 0.75x + 2.5
The cost for three hours (x = 3) is:
y = 0.75(3) + 2.5
y = $4.75

Where the white dots are is where your points should be plotted.a translation is simply just moving something from one place to another. in this case, you would move each plot point of the original shape 2 units up, and 5 units to the left.