Answer:
Construct a line from A perpendicular to the x-axis, determine the distance from A to the x-axis along this perpendicular line, find a new point on the other side of the x-axis that is equidistant from the x-axis
Step-by-step explanation:
we know that
The rule of the reflection of a point across the x-axis is equal to
(x,y) -----> (x,-y)
That means ----> The reflected point will be located equidistant from the x-axis
so
Construct a line from A perpendicular to the x-axis
Determine the distance from A to the x-axis along this perpendicular line
Find a new point on the other side of the x-axis that is equidistant from the x-axis
therefore
A(-2,1) --------> A'(-2,-1)
The reflection point is A'
The distance of point A to the x-axis is equal to 1 unit
The distance from point A' to the x-axis is also 1 unit
Answer:
A) a=25
B) b=14
Step-by-step explanation:
A) a/5+3=8
First you need to subtract 3 from both sides.
(a/5+3)-3=(8)-3
Then simplify
a/5=5
Multiply both sides by 5
(a/5)*5=(5)*5
Then simplify
a= 25
B )3b/7-1=5
First you need to add 1 to both sides
(3b/7-1)+1=(5)+1
Simplify
3b/7=6
Multiply both sides by 7
(3b/7)*7=(6)*7
Simplify
3b=42
Divide both sides by 3
(3b)/3=(42/3)/3
Simplify
b= 14
(Brainliest???) :P
The slope is 2/3 and the y intercept is -3
Answer:
A ) 6
Step-by-step explanation:
The formula for Average rate of change is:
Aroc = change in y / change in x.
Aroc = y2-y1 / x2 - x1
The first point will be (x1,y1), and second will be (x2,y2).
x1 is 0, and when the x value is at 0, the y value is at -7, so the coordinate point is (0, -7).
For the second point, x = 2, and the corresponding y value is 5. So you just simpliy plug everything into the formula to find AROC:
= 5 - (-7) / 2 - 0
= 12 / 2
= 6