Slope-intercept form: y = mx + b
(m is the slope, b is the y-intercept or the y value when x = 0 --> (0, y) or the point where the line crosses through the y-axis)
For lines to be perpendicular, their slopes have to be the negative reciprocal of each other. (Basically flip the sign +/- and the fraction[switch the numerator and the denominator])
For example:
Slope =
Perpendicular line's slope = or -3
Slope = -2 or
Perpendicular line's slope =
The given line's slope is , so the perpendicular line's slope is -3. Now that you know the slope, substitute/plug it into the equation:
y = mx + b
y = -3x + b To find b, plug in the point (1, 9) and isolate/get the variable "b" by itself in the equation
9 = -3(1) + b Add 3 on both sides to get "b" by itself
9 + 3 = -3 + 3 + b
12 = b
y = -3x + 12
Answer: Properties of Angles
The sum of all the angles on one side of a straight line is always 180 degrees. For example: The sum of ∠1, ∠2, and ∠3 is 180 degrees
Step-by-step explanation: I’m smart plz give brainlest
Consecutive integers are one apart from each tother
they are
x,x+1,x+2
sum is -30
x+x+1+x+2=-30
3x+3=-30
minus 3 both sides
3x=-33
divide 3
x=-11
find rest
x+1=-11+1=-10
x+2=-11+2=-9
they are
-9,-10,-11
Richard walks
1 kilometer : 10 minutes
That would mean
6 kilometers : 60 minutes
<span>Hope that helps and correct me if I'm wrong!</span>
180=2x+y
180-y=2x
(180-y)/2=x