What is the slope of the line that passes through the points (10,8) and (-15,18) ?
1 answer:
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y=13.34 when x=15
Step-by-step explanation:
We are given that x varies directly with y i.e y ∝ x
We know that: y ∝ x then
y= k/x
where k is constant.
So, if y=10 and x=20 we can find k
Now, we need to find y when x=15
We know that k = 200,
So,
So, y=13.34 when x=15
Keywords: Direct variation
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