Can you add a negative and a positive when doing like term
2 answers:
In short yes. But to know for sure you can combine any term no matter the sign as long as they have the same type of variable attached to them for example
this cannot be combined because one is squared the other isn't
you can combine these because they're the same type of variable this just becomes 1
we cant combine x into these because it's not just a constant number but we can combine 3 and negative 5 to get
hope this helps!
this cannot be combined because one is squared the other isn't
you can combine these because they're the same type of variable this just becomes 1
we cant combine x into these because it's not just a constant number but we can combine 3 and negative 5 to get
hope this helps!
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Answer:
y = - 4x + 3
Step-by-step explanation:
The perpendicular bisector is positioned at the midpoint of AB at right angles.
We require to find the midpoint and slope m of AB
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = A(3, 8) and (x₂, y₂ ) = B(- 5, 6)
m = =
=
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
= - 4
mid point = [0.5(x₁ + x₂ ), 0.5(y₁ + y₂ ) ]
Using the coordinates of A and B, then
midpoint AB = [0.5(3 - 5), 0.5(8 + 6) ] = (- 1, 7 )
Equation of perpendicular in slope- intercept form
y = mx + c ( m is the slope and c the y- intercept )
with m = - 4
y = - 4x + c ← is the partial equation
To find c substitute (- 1, 7) into the partial equation
Using (- 1, 7), then
7 = 4 + c ⇒ c = 7 - 4 = 3
y = - 4x + 3 ← equation of perpendicular bisector