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astraxan [27]
3 years ago
15

Point W has coordinates (4, -7). If it is reflected over the y -axis, what are the coordinates of its image?

Mathematics
1 answer:
Korolek [52]3 years ago
4 0

Answer:

I thank it is D

Step-by-step explanation:

You might be interested in
What does 5x + 10y equal
leonid [27]

Answer:

Step-by-step explanation:

 Slope = 1.000/2.000 = 0.500

 x-intercept = 0/1 = 0.00000

 y-intercept = 0/-2 = -0.00000

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    5*x-(10*y)=0  

Step by step solution :

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  5x - 10y  =   5 • (x - 2y)  

Equation at the end of step  1  :

Step  2  :

Equations which are never true :

2.1      Solve :    5   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Equation of a Straight Line

2.2     Solve   x-2y  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  x-2y  = 0 and calculate its properties

Graph of a Straight Line :

 

 

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 0/-2 so this line "cuts" the y axis at y=-0.00000

 y-intercept = 0/-2  = -0.00000  

Calculate the X-Intercept :

When y = 0 the value of x is 0/1 Our line therefore "cuts" the x axis at x= 0.00000

 x-intercept = 0/1  =  0.00000  

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 0.000 and for x=2.000, the value of y is 1.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 1.000 - 0.000 = 1.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     =  1.000/2.000 =  0.500  

Geometric figure: Straight Line

 Slope = 1.000/2.000 = 0.500

 x-intercept = 0/1 = 0.00000

 y-intercept = 0/-2 = -0.00000

6 0
4 years ago
If an object is dropped from a height of 144 feet, the function h(t)=-16t^2 +144 gives the height of the object after t seconds.
Vaselesa [24]
If the object hit the ground, then this mean that the height is 0, right?
so solve for it like this: 

0= -16t^2+144
-144 = -16t^2
Divide by (-16)
9= t^2 
square root both sides
t= 3 or -3
there is no negative time then the object will hit the ground after 3 secs
8 0
3 years ago
Read 2 more answers
Everyday an automobile factory assembles 46 more cars than trucks.
Alex17521 [72]

Answer:

55

Step-by-step explanation:

46 more cars than the 9 trucks = 46+9=55 cars

46+t=c

4 0
3 years ago
Read 2 more answers
The formula for the surface area of a circular cylinder is SA = 2πr 2 + 2πrh cubic units. What do 2πr 2 and 2πrh represent?
Molodets [167]
Remember
area=pir^2
circumference=2pir

the surface aera if you thinkg about it is
2 times the tops+area around

the tops are circles so 2*pir^2 is tops

the area around is a rectangle that has been wrapped around the cylinder,
the hieght is the legnth and the circumference is width
so 2hpir is the area around

2pir^2 is the areas of the tops
2hpir is the area around
4 0
4 years ago
(06.04 MC) Dennis drew the line of best fit on the scatter plot shown below: What is the approximate equation of this line of be
elena-14-01-66 [18.8K]

Answer:

Step-by-step explanation:

In order to write the equation of this line, we need to pick 2 points on the graph where the line goes right through the intersection of the grids. Actually, you only need 1 of these, because the line goes through at (0, 15). Another point then can be (6, 6). Locate this point so you know what I means when I say that the line goes right through where the grids intersect at x = 6 and y = 6 (as opposed to somewhere in the middle of one of these grids). Find the slope between these 2 points:

m=\frac{6-15}{6-0}=-\frac{9}{6}=-\frac{3}{2}

Since there's only one choice with that slope, that is the choice you want.

5 0
3 years ago
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