Using the linear combination method, we can add 3x+7y=31 and -3x-2y=-1 together, which makes 5y=30.
Just divide both sides by 5, and your answer will be y = 6.
To solve for x, just substitute 6 in y in either equation and solve for x:
In short, the correct answer is B. -3 2/3
Answer:
y=5x-78
Step-by-step explanation:
y=5x+b
first plug in -3 for y and 15 for x
-3=5(15)+b
-3=75+b
subtract 75 on both sides
-78=b
y=5x-78
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Answer:
The range is 3.
Step-by-step explanation: To find the range you have to subtract the largest data number from the smallest data number. The highest is 3 and the lowest is 2. 3-2 is 1.
Set the angles equal because they are vertical angles
150=5m
30=m (divide both sides by 5)