Given the two functions below, what is the y-intercept of g(x)?

f(x) = x2
g(x) = f(x –7)

Type your answer as an integer, like this: -14

Question

Given the two functions below, what is the y-intercept of g(x)?

f(x) = x2
g(x) = f(x –7)

Type your answer as an integer, like this: -14

johnweldon1993 · Answer

To find the y-intercept...we would make x = 0

g(x) = f(x - 7) where we see that 'x' we would replace it with whatever f(x) equals...so

g(x) = x² - 7

If we want the y-intercept...x must = 0 .....so we have

g(x) = 0 - 7

the y-intercept must = -7 If i'm correct

jim_thompson5910 · Answer

you replace x with (x-7), so g(x) = (x-7)^2

anonymous · Answer

Can I have your brains John and Jim? Lol

anonymous · Answer

jim's answer is correct, the answer is not -7

johnweldon1993 · Answer

Wait @jim_thompson5910 did I miss that? hang on lol

jim_thompson5910 · Answer

lol no sorry, but I'm sure you have brains as well brandeejo

anonymous · Answer

it should be 49

anonymous · Answer

(0-7)^2 = 49

jim_thompson5910 · Answer

so all you do is plug in x = 0 to get...

g(x) = (x-7)^2

g(0) = (0-7)^2

g(0) = (-7)^2

g(0) = 49

anonymous · Answer

Im only kidding. thank you guys. All have been such a huge help!

jim_thompson5910 · Answer

so you know the point (0,49) is on g(x)

johnweldon1993 · Answer

AHH! thank you sorry blind moment there lol

jim_thompson5910 · Answer

that's fine

johnweldon1993 · Answer

So yeah ignore my post @brandeejo :)

anonymous · Answer

Your fine John!