5.1 Review Worksheet, Part 1 (continued)
11. The gas tank in Tony’s car holds 15 gallons, and the car can travel 25 miles for each gallon of gas. When Tony begins with a full tank of gas, the function =− + f x x ( ) 1 25 15 gives the amount of gas f ( x ) that will be left in the tank after traveling x miles (if he does not buy more gas). Graph this function and give its domain and range.
5.1.2 Using Intercepts Find the x - and y -intercepts.
12.
13.
14.
y
y
4 y
2
2
x
2
x
–4 –2
2
x
–4 –2
0
–4 –2
2
4
–2
–2
–2
–4
–4
15. 6 x + 3 y = 12
16. 4 y − 8 = 2 x
17. − 2 y + x = 2 y − 8
18. 4 x + y = 8
19. y − 3 x = − 15
20. 2 x + y = 10 x − 1
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