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describe and correct the error in evaluating the function g(x)= 5x+3 when x=3
g(3)= 5(3)+3
3g=18
g= 6
 one year ago
 one year ago
describe and correct the error in evaluating the function g(x)= 5x+3 when x=3 g(3)= 5(3)+3 3g=18 g= 6
 one year ago
 one year ago

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swissgirlBest ResponseYou've already chosen the best response.1
Ok I tried explaining this to someone the other day but I wasn't that clear in explaining it. Its hard to explain this concept online but let me try again
 one year ago

swissgirlBest ResponseYou've already chosen the best response.1
We are given the equation g(x)= 5x+3 This is the equation of the function g and g varies according to the value of x If g(x) was a constant such as g(x)=3 we would have a vertical line at y=3 but in our case our y keeps changing according to our x So when x=2 y=5(2)+3 y=10+3 y=7 Now when x=3 y=5(3)+3 y=15+3 y=18 So basically as you can see our yvalue keeps changing according to what our x equals So g(3) means what does g equal when our x equals 3
 one year ago

beezybee98Best ResponseYou've already chosen the best response.0
wait i write all that?????
 one year ago

swissgirlBest ResponseYou've already chosen the best response.1
nooo But do you understand what g(3) means?
 one year ago

swissgirlBest ResponseYou've already chosen the best response.1
The error is that they multiplied g by 3 instead of treating it as "what does g equal when x=3" Then when x=3 g(3)=5(3)+3 g(3)=15+3 g(3)=18 So when x=3 then g=18
 one year ago

LogicalAppleBest ResponseYou've already chosen the best response.1
g(x) is a function, so g(3) means to evaluate g(x) using x = 3 as @swissgirl demonstrated.
 one year ago
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