<span>When interpreting graphs of real world situations, the slope of each part tell you the average rate of change (increase or decrease) of the dependent variable with respect to the independent variable. This is, how much the dependent variable increased (or decrease) per each unit the independent varaible increased, in average.
slope = change in independent variable / change in dependent variable
slope = Δy / Δx</span>
Answer:
She would have ran 48 miles, (if i did my math correctly)
Step-by-step explanation:
7 x 1 = 7
7 x 2 = 13
7 x 4 = 28
7+13+28 =48
Answer: -1/2
Step-by-step explanation:
I didn’t know the answer so I winged it and it worked!
Casey is 18 years old and Ralph is 3 years old.
Step-by-step explanation:
Let,
Age of Casey = x
Age of Ralph = y
According to given statement;
x = 6y Eqn 1
In two years
x+2=4(y+2)
x+2=4y+8
x = 4y+8-2
x = 4y+6 Eqn 2
Putting value of x from Eqn 1 in Eqn 2
Dividing both sides by 2
Putting y=3 in Eqn 1
Casey is 18 years old and Ralph is 3 years old.
Keywords: word problems, substitution method
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