I hope this helps. Keep in mind the 1/3 is slope and the 3 is y-intercept.
What is the value of a in the equation 3a+b=54 , when b=9 ?
2 answers:
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For this case, the first thing we must do is define variables.
We have then:
x: Maggie's age
y: Age of Maggie's brother
We write the system of equations that models the problem.
We have then:
We solve the system of equations.
For this, we use substitution:
From here, we clear the value of x:
Answer:
Maggie is 9 years old
Answer:
Step-by-step explanation:
