DarlingtonQueen
12.01.2021 •
Mathematics
Please answer 5 stars and brainlist 20 points
What do the points represent?
(0, 60) represents the speed of the automobile before braking. (6, 0) represents the amount of time it takes to stop.
b. What does the line represent?
The line represents the speed y of the automobile after x seconds of braking.
Question 3
c. Write an equation of the line in slope-intercept form.
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Ответ:
just replace all x's with x+5 in first equation
f(x+5)=(x+5)^2+3(x+5)-10
f(x+5)=x^2+10x+25+3x+15-10
f(x+5)=x^2+13x+30
compare
f(x)=x^2+3x-10
f(x+5)=x^2+13x+30
now we can set it to zero
f(x+5)=0
0=x^2+13x+30
factor
0=(x+3)(x+10)
set each to zero
x+3=0
x=-3
x+10=0
x=-10
-10<-3
smalles zero is x=-10