A few days ago
Finding the X-intercepts?
Find the x-intercepts for the graph of the equation
y = x^2 – 3x – 10
Top 3 Answers
A few days ago
Favorite Answer
x-intercepts happen when y=0
so set y to zero and solve the eqn
x^2-3x-10=0
factor this to
(x-5)(x+2)=0
so either
x-5=0
or
x+2=0
solve each of these for x
then substitute them into
(x,0) and (x,0) are the
x-intercepts
***y-intercepts happen when x=0
0
A few days ago
well you can use the quadratic equation to get both of the answers, or factor it.
y=(x-5)(x+2)
x = 5 and x = -2
***EDIT***
yeah sorry set the ‘y’ variable to zero
0
A few days ago
(-2,0) & (5,0)
0
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