devianticamelia devianticamelia
  • 13-04-2018
  • Mathematics
contestada

find a so that the point (-1,2) is on the graph of f(x)=ax^2 +4

Respuesta :

johnlemon23
johnlemon23 johnlemon23
  • 13-04-2018
Given our point (-1,2) we know that x must take the value of x and 2 must therefore be the value of f(x)

With this said:
f(x)=2=a(-1)^2+4
f(x)=2=a(1)+4
f(x)=2=a+4
Subtracting 4 from both sides to find a :
2-4=a+4-4
-2=a
Answer Link

Otras preguntas

Which will best hel markus understand the central ideas as he reads
The bakers at healthy bakery can make 280 bagels in 10 hours. How many bagels can they bake in 13 hours?
germany's reparation payments after world war 1 caused
Which of the following Great Lakes does not border both Canada and the United States?
-1 and 3/5 times (-5/8)
Sexual reproduction requires the cellular process of __________ followed by __________.
Identify a pattern and find the next three numbers. 66​, 88​, 1111​, 1515​, ...
How will a colony benefit us?
A local weather forecaster is accurate 85% of the time when predicting precipitation for the day. What is the probability that she will make correct precipitati
A number decreased by 5 is less than 33