SOLUTION: I need help with finding all intercepts for the graph of the quadratic function f(x) = 5x�

SOLUTION: I need help with finding all intercepts for the graph of the quadratic function f(x) = 5x� - 38x + 21

Question 382653: I need help with finding all intercepts for the graph of the quadratic function
f(x) = 5x� - 38x + 21
Answer by kingme18(98) (Show Source): You can put this solution on YOUR website!
x-intercepts can be found by setting y=0, and y-intercepts are when x=0.
The y-intercept is easier to find: , so the y-intercept is 21.
To find the x-intercepts: . We can solve by factoring: . If two things multiply to 0, one of them must be equal to 0. Thus, either or . To solve the first equation, add 3 to both sides then divide by 5, so . To solve the second, add 7 to both sides and get . This means your x-intercepts are 3/5 and 7.
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