The value of an explanatory variable is 5, while the corresponding value of the response variable is 15. What would be the coord
2 answers:
You might be interested in
Answer:
The answer is below
Step-by-step explanation:
The ratio of Keith's height and his nephew's height is 15:7. Let keith height be x cm and his nephews height be y cm.
Keiths height increased by 16% , therefore Keith new height is (100% + 16%) × x = 1.16x
The nephew height is doubled, therefore his new height is 2y.
Given that Keith is now 34 cm taller than his nephew
1.16x = 2y + 34
but x = (15/7)y
The nephews new height = 2y = 2(70) = 140 cm
Keith new height = 2y + 34 = 140 + 34 = 174 cm
Their total current height = 140 cm + 174 cm = 314 cm
Problems a through c are asking you what the values would be at those values.
What will the value of be at
? Let's look at the graph.
It seems at ,
, meaning that
Let's do the same for the others.
At ,
At ,
For the last question, it is giving us the value and asking us which
values would give us that.
At ,
.
*Note* this function is continuous to the right, meaning that there is another point where .
Hope this helps.
頑張って!