Find the coordinates of the y-intercept and x-intercepts of the following. (image!)
1 answer:
Answer:
Step-by-step explanation:
We can do this a couple of ways. We can graph it -- see below. Or we can do the math.
Math
y = x^2 - 2x - 15
This trinomial factors into
y = (x - 5)(x + 3)
from which
x - 5= 0
x = 5
and
x + 3 = 0
x = - 3
The y intercept is the value obtained when all the xs on the right = 0
y = 0^2 - 2*0 - 15
y = - 15
<em>Answer</em>
- x intercepts: (-3,0),(5,0)
- y intercept: (0,-15)
The graph is below.
You might be interested in
To solve these type of problem you have to make the denominator the same or use the claculator.
let us do this problem by making the denominator the same.
So, now. the one with the largest numerator is the largest fraction
In this case,
is the largest which is equal to 
.
So, the largest fraction is.
let us do this problem by making the denominator the same.
So, now. the one with the largest numerator is the largest fraction
In this case,
So, the largest fraction is