A family has two cars. The first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of
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The function is
The "zeros" of a function, are the values of x, for which f(x)=0
According to the "Rational Root Theorem", the rational roots of f, are factors of 60.
That is, when trying to find the roots of a polynomial function, it is a very good idea to first check the factors of the constant term.
All numbers shown in the choices are factors of 60, so we will solve the problem by trial:
2 is not a root, so we eliminate choices A and D,
Choices B and C are almost equal, with only 1 different number, so let's check whether 5 is a root or not:
but
So the right choice is B
The "zeros" of a function, are the values of x, for which f(x)=0
According to the "Rational Root Theorem", the rational roots of f, are factors of 60.
That is, when trying to find the roots of a polynomial function, it is a very good idea to first check the factors of the constant term.
All numbers shown in the choices are factors of 60, so we will solve the problem by trial:
2 is not a root, so we eliminate choices A and D,
Choices B and C are almost equal, with only 1 different number, so let's check whether 5 is a root or not:
but
So the right choice is B
The equation that runs through the location (4,-6) has the slope-intercept form, .
A line's equation written in the slope-intercept form:
y=mx+b
where m= slope & b= y-intercept
The slope of two parallel lines is equal.
Currently, we know the line's equation:
here, slope, m=
A line equation is created by adding the slope's value and the point's coordinates (4, -6):
⇒ -6=-3 +b [adding 3 to both sides]
⇒-3=b
⇒b= -3
Hence the solution is .
Learn more about slope-intercept form here:
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