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Mathematics 12 Online
OpenStudy (mollykenney):

Plot 5 points f (x) = x^2 + 2x -2 will someone explain how to solve for the plotted points

OpenStudy (vishweshshrimali5):

Just choose random values of f(x) and solve for the corresponding values of x

OpenStudy (vishweshshrimali5):

Your point would be (x,f(x)). Do you need an example ?

OpenStudy (mollykenney):

so after i solve and get my x, my y is the number i originally started with?

OpenStudy (vishweshshrimali5):

Great

OpenStudy (vishweshshrimali5):

Try ...

OpenStudy (mollykenney):

it just erased all my work but basically i got 1,-2

OpenStudy (vishweshshrimali5):

How ?

OpenStudy (mollykenney):

well i had f(-2) = -2^2 + 2(-2) - 2

OpenStudy (vishweshshrimali5):

So, f(-2) = ?

OpenStudy (mollykenney):

4 - 4 -2 = -2 f(-2) = -2 1,-2

OpenStudy (vishweshshrimali5):

But how did you get that 1 ?

OpenStudy (mollykenney):

-2 divided by -2

OpenStudy (vishweshshrimali5):

No... no.. See the point must be (x,f(x)) You chose your x = -2 and got the corresponding value of f(x) = f(-2) = -2 So, your point should be (-2, -2)

OpenStudy (mollykenney):

aw ok i understand

OpenStudy (mollykenney):

thank you so much

OpenStudy (mollykenney):

for the help

OpenStudy (vishweshshrimali5):

Your welcome :)

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