9514 1404 393
Answer:
y = -7x
Step-by-step explanation:
The line goes through the origin, so the y-intercept is b=0.
The line goes through the point (1, -7), so has a "rise" of -7 for a "run" of 1. The slope is ...
m = rise/run = -7/1 = -7
Then the slope-intercept form equation is ...
y = mx + b
y = -7x
7:4 is the constant and is your answer
It would come out to be $41.8275, so if you round it would cost $41.83.
Do you mean the integer is less than eighteen or do you mean minus 18?
To determine x intercept, put y=0
<span>x^4 - 10x^2 + 9
= 0
</span>
<span>x^4 - 9x^2 - x^2 + 9
= 0
x^2(x^2 - 9) - 1(</span><span>x^2 - 9) = 0
(</span><span>x^2 - 9)(x^2-1) =0
x^2 - 9 = 0
⇒ x^2 = 9
⇒x = +3, -3
x^2 - 1 = 0
x^2 = 1
x = +1, -1
X intercepts are -3, -1, 1, 3
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