Please help I have no clue what to do
1 answer:
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Answer:
In order to find the slope (m), and the y-intercept of this coordinate pair, you must complete rise over run.
This is represented by y2-y1, x2-x1. This can be represented like so:
-4-0 = -4
5--4 = 9
Here, we have concluded that our slope is -4/9.
Now, we must convert this into point slope form. Point slope form is y-y1=m(x-x1). This will look like this in our situation:
y+4=-4/9(x-0)
To solve, distribute the -4/9 first, which will leave you with:
y+4=-4/9x+0
Now, subract the 4 to both sides of the equation.
Our final answer looks like: y=-4/9-4.
<em>-</em>
<em>SLOPE: -4/9</em>
<em>Y INTERCEPT: -4 </em>
Answer:
B. 9
Step-by-step explanation:
We are given that <em>y</em> varies inversely with <em>x</em>. Recall that inverse variation has the form:
Where <em>k</em> is the constant of variation.
We are given that <em>y</em> = 18 when <em>x</em> = 12. Hence:
Solve for <em>k. </em>Multiply both sides by 12:
Thus, our equation is:
We want to find <em>x</em> when <em>y</em> = 24. Substitute:
Cross-multiply:
Divide both sides by 24. Hence:
Our answer is B.