First thing to do is to solve each of these for y. The first one is y=-4x-3; the second one is y=4x-21; the third one is y=4x+21; the fourth one is y=-4x+3. From that you can tell the positive slopes are found in the second and third equations. Those are the ones we will test now for the point (3, -9). y=-9 and x=3, so let's fill in accordingly. The second equation filled in is -9=4(3)-21. Does the left side equal the right when we do the math? -9=12-21 and -9=-9. So the second one works. Just for the sake of completion, let's do the same with the third: -9=4(3)+21. Does -9=12+21? Of course it doesn't. Our equation is the second one above, y+9=4(x-3).
Step-by-step explanation:
(9x-8)-(x+4)=8x+12
9x-8-x-4=8x+12
8x-12=8x+12 (no it's not)
So it's false.
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Question: brainly.com/question/19989741
Answer:
4.5 gallons.
Step-by-step explanation:
Multiply the volume value by 4.
In this case, you multiple 4.5 by 4 which equals 18.
4.5 gallons = 18 quarts
