Monday

March 30, 2015

March 30, 2015

Posted by **Nilan** on Monday, October 3, 2011 at 10:01pm.

I understand I could start with (x+3)(x-5)^2, but i don't know how to get the y-intercept 1350 with the same conditions. Please help. thank you.

- Math -
**Steve**, Tuesday, October 4, 2011 at 9:00amWe don't know that 5 is a double root. So,

y = (x+3)(x-5)(x-k) = <powers of x> + 15k

So, since the y-intercept is where x=0, all the <powers of x> go away and we have 15k = 1350

k = 90

y = (x+3)(x-5)(x-90)

**Answer this Question**

**Related Questions**

Algebra - Produce a third degree polynomial that has exactly the roots -3 and 5 ...

Algebra: Check please!!! - 1. Find the x-intercept and the y-intercept of 8x - ...

Math please check my answer? - 1)6x+11y=30 A) x-intercept= (-24,0);y intercept...

Algebra: x and y intercept, someone check please - 1. Find the x-intercept and ...

Algebra - The table below represents the function f(x). (-6, 12),(-5,-8),(-4,-4...

Algebra - If 3 is a zero of the polynomial f(x), then which of the following is ...

Algebra 1--Please, help me! - 1. What are the x- and y-intercepts of the line ...

Math: Linear Equations - What is "3x=9" in y=mx+b form, and what is its slope, y...

Math: Linear Equations - What is "3x=9" in y=mx+b form, and what is its slope, y...

algebra 1 - If the graph of a line has a positive slope and a negative y-...