if (a,-4) is a point on a graph y=x^2+5x then what is a?

pleitatsj1

pleitatsj1

Answered question

2022-08-03

if (a,-4) is a point on a graph y=x^2+5x then what is a?

Answer & Explanation

Donovan Shields

Donovan Shields

Beginner2022-08-04Added 13 answers

y = x^2 + 5 * x
(a, -4) lies on the curve..
so, -4 = a^2 + 5a
a^2 + 5a + 4 = 0
a^2 + 4a + a + 4 = 0
(a + 4)(a + 1) = 0
so, a = -4 or a = -1

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?