Answer:
x²=5-x
x²+x-5=0
1x²+1x²-5=0
[ax²+bx²+c=0]
∆=b²-4ac
∆=1²-4(-5)(1)=1+20=21
x=(-b±√∆)/2a
x=(-1±√21)/2
meaning:
x=(-1+√21)/2 or x=(-1-√21)/2
Answer:
slope = -1
Step-by-step explanation:
parallel lines have the same slope,
y = -x – 4
=> y = -1(x) -4
↑ slope
y = mx + b
↑ slope
Answer:
3x - y = -5
<u>-3x -3x</u>
<u>-y</u> = <u>-3x</u> <u>-5</u>
-1 -1 -1
y = 3x + 5
Step-by-step explanation:
- subtract 3x from both sides. 3x cancel 3x, but it can't cancel -5 since it doesn't have any x.
- since y is negative, divide both sides by -1.
- the slope here is 3x, but the slope intercept form is y = 3x + 5
Answer:
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Step-by-step explanation:
