Whats the answer for the whole problem please help i give brainliest.

The equation for this is G= -3/2x + 12

and the interpretation of the context, I may get this wrong, is the Y-intercept is  the number of gallons used per mile

Step-by-step explanation:

to find out the slope, you get the point from the y-intercept (0, 12) and you see how much you go down for the first number, then you see how much you go right for the second number until you reach the next point in which case it's (2, 9), which will give you 3 for the first number and 2 for the second number.

Then you place the first number above the second number and put a negative sign in front of the whole thing if the line is going down. So the number would be 3/2 and the line is going down, so the answer would be -3/2

to find the y-intercept, you just look at where the point starts on the y-intercept, which is at 12. So the y-intercept is 12.

6 cm

step-by-step explanation: