-34+21=-13 because when there is a negative number + a positive, all you do is add 22 into -34.
C. b = 34
To solve this type of equations that only involve one variable, we have to isolate the variable at on side of the equation. So, for the given equation
We will subtract 21 from both sides
As the minus sign is on both sides of the equation, it will be cancelled and
So, option C is the correct answer ..
Let's start solving
Collect like terms
Substrate 121 from both sides
Which means that b has been made the subject of formula
combine like terms
get ride of ur smaller variable
-1= 1/2 * 4 + b
-1 = 2 + b
b = -1 - 2
b = -3
(A -7C)/3 = B
A= 3B + 7C
We want to get B isolated
Subtract 7C from each side
A-7C= 3B + 7C-7C
A -7C = 3B
Divide by 3 on each side
(A -7C)/3 = 3B/3
(A -7C)/3 = B
A. Substitute the slope and the coordinates of point P in y=mx+b and then solve for b for each equation.
We know the equation for a line passing through a point P(x,y) is given as:
y = mx + b
m is the slope of the line.
x, y are the co-ordinates of point P.
b is the y-intercept of line on point P(x,y).
If g is the line. we find its slop m. Let's the slope 'm' is given as m = b/a
The slope of lines parallel to line g is b/a.
The slope of lines perpendicular to line g is -a/b.
Substituting the slope and and coordinates of point P and then solving for b will give us the y-intercept.