A few days ago

Anonymous

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

molawby

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

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

A few days ago

g-ud

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

A few days ago

Anonymous

(-2,0) & (5,0)

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