Answer:
To know the equation of line we need 2 things
slope and y intercept
slope= (y2-y1)÷(x2-x1)
y intercept is y when x =0
then put them in formula f(x)=mx+c
m = slope, c= y intercept
1: slope = 1. y intercept = 4
f(x)=x+4
2: slope = -9/2. y intercept = 11/2
f(x)= -9/2x+(11/2)
3: slope = 1/3. y intercept = -11/3
f(x)=x/3+(-11/3)
4: slope = -1. y intercept = 7
f(x)=-x+7
5: slope = 1. y intercept = -2
f(x)=x+-2
brand A 7.79. 8 cent brand B 6.83 7 cent
Step-by-step explanation:
better buy brand B you get twice much and they are 1 cent cheaper
187÷24=7.79 /287÷42=6.83
Answer:
Step-by-step explanation:
Transform - y-25^2=-100
divide
simplify
x plus-minus
We can't tell from the information you've given.
With the dots at the end, you showed that there's more
to the decimal. But you didn't say how much more.
-- If the decimal EVER ends, even after a billion places,
then it's rational.
-- If it repeats, then it's rational. That .80012569923 may repeat,
or part of it, like the 9923, may repeat, or the whole thing may be
part of some larger bunch that repeats. We don't know.
Option 3 is correct. This is because the symbol in between line wy and line xz means the two lines are perpendicular