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anonymous
 one year ago
For what values of m does the graph of y = 3x2 + 7x + m have two xintercepts?
a) m>12/49
b) m<12/49
c) m<49/12
d) m> 49/12
anonymous
 one year ago
For what values of m does the graph of y = 3x2 + 7x + m have two xintercepts? a) m>12/49 b) m<12/49 c) m<49/12 d) m> 49/12

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you have any pictures for this question?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hold on, I'm working it out on paper.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alrighty. The quadratic formula (a part we call the "discriminant") is defined by the variables that are inside the square root, and is denotated by the delta

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Whenever we solve a quadratic equation that is complete and we analyze the discriminant,

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we get 3 scenarios: if→Δ>0=>∃x1,x2/ax2+bx+c=0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This just means: "if the discriminant is greater than zero, there will exist two xintercepts" And for the second scenario: if→Δ=0→∃xo/ax2+bx+c=0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This means that if the discriminant is equal to zero, there will be one and only one xintercept And for the last scenario: (if→Δ<0→∃x∉R/ax2+bx+c=0) This means that if our discriminant is less than zero, there will be no xintercepts So, if we take your excercise and analyze the the discriminant (which is 3x2+7x+m=y) we can find the values that satisfy y=0 3x2+7x+m=0 than we can analyze the discriminant: Δ=72−4(3)(m) we are only interested in the values that make the discriminant equal zero 72−4(3)(m)=0 so all you have to do is solve for "m"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh no :( I'll simplify this to find the intercepts of the graph, you have to solve for "m"
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