Question

What are the x-intercept(s) of the graph of y − 3 = x2 + 4x?

Answer 1

rewrite the equation as

\[y = x^2 + 4x + 3\]

can you factorise this..?

Answer 2

to find the x- intercepts let y = 0

then

\[x^2 + 4x + 3 = 0\]

Answer 3

but like isnt it a rule that a cant equal 0?

Answer 4

the rule for x intercepts is that y = 0....

you are finding the points on the x-axis.... this is where y is always equal to zero

Answer 5

no. A cant equal zero... and it does in this equation

Answer 6

you let the equation equal zero

\[x^2 + 4x + 3 = 0\]

so can you factorise

Answer 7

@marmar3000 , if you're referring to the coefficients in the equation \(\large y=ax^2+bx+c \), then in your equation a is not zero...

Answer 8

now you need to find the factors of 3 that add to 4