# college algebra

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y intercept:
3x^2+18x

0=3x^2+18x

from here im lost

• college algebra -

what do you want to do?
solve it ?
find the y-intercept ?

• college algebra -

yes find y intercept

• college algebra -

then let x = 0
so y = 3(0) + 18(0) = 0

the y-intercept is 0, the line runs through the origin.

• college algebra -

sorry i meant the x intercept

• college algebra -

x intercept:
y = 3x^2+18x
0 = 3x^2+18x

3x is common to both terms on the right: factor it out.

0 = 3x(x + 6)

If 2 values are multiplied together and the product is 0, then one or both of the values must be 0.

3x = 0 and/or x + 6 = 0

Take it from there.

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