To find the slope, we put this in y = mx + b form where m is ur slope.
3x - 4y = 7.....subtract 3x from both sides
-4y = -3x + 7 ...now we divide both sides by -4
(-4/-4)y = (-3/-4)x + (-7/4)...simplify
y = 3/4x - 7/4
y = mx + b
y = 3/4x - 7/4.....so the number in the m position is 3/4 <== ur slope
Answer:
y=13
Step-by-step explanation:
The answer is 81.
Hope i helped!
<h2>
Key Concepts</h2>
- Linear systems
- Word problems
<h2>Solving the Question</h2>
In this case, we're given the following information:
- Mother = $9
- Grandmother = $1 per mile
- Isabelle walks <em>x</em> miles, mother pledge = grandmother pledge
The mother's donation of $9 will not change <em>no matter how many miles Isabelle has walked</em>, so if both the mother's and grandmother's donations are equal, they must each owe 9$.
<h2>Answer</h2>
Each donor owes $9.