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2 years ago

Can somebody please help me?!! I will give BRAINLIEST!!

Mathematics

1 answer:

Wewaii [24]2 years ago

5 0

Answer:

Step-by-step explanation:

Mark the two points (-1,7) and (1,-1) on the graph. Then draw a straight line between them. To determine the equation that goes through these two points, we can use the two given points to find the slope of the line. The standard form of a straight line equation is

y = mx + b,

where m is the slope and y is the y-intercept (the value of y when x = 0).

Slope is also known as the "Rise"/"Run" - the change in y divided by the change in x. We can use the two points to calculate this:

Rise (-1-(7) = -8 Run = (1 - (-1) = 2

The slope is therefore (-8/2) or -4.

y = -4x + b

We can find b by entering either of the two points in y = -4x + b and solve for b. I'll use (1,-1) since I have my 1's multiplication table memorized

y = -4x + b

-1 = -4(1) + b

b = 3

The straight line equation that connects the two points is

y = -4x + 3

You can graph this equation (e.g., on DESMOS) to see how it intersects the points. [Attached]

The coordinates of the y intercept are (0,3).

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Which graph represents -

11Alexandr11 [23.1K]

Answer:

3rd

Step-by-step explanation:

5 0

3 years ago

TEXASCHIC! :)

nlexa [21]

(3,51)(5,59)
slope = (59 - 51) / (5 - 3) = 8/2 = 4

y = mx + b
slope(m) = 4
(3,51)...x = 3 and y = 51
sub and find b, the y int
51 = 4(3) + b
51 = 12 + b
51 - 12 = b
39 = b

so ur equation is : y = 4x + 39...but u need it in standard form

y = 4x + 39
-4x + y = 39
4x - y = -39 <==== this is ur equation...x = number of hrs and y = total velocity
====================
ur x axis is the number of hrs
ur y axis is total velocity in km

y = 4x + 39......slope = 4.....y int = (0,39)....x int is (- 9.75,0) or -9 3/4 for graphing purposes)....so start at (-9.75,0)...and since the slope is 4, go up 4 and to the right 1....plot that...then up 4 and to the right 1...plot that...u will cross the y axis at (0,39)....and just connect ur plotted points and u have ur line......or what u can do since it is asking for the first 6 hrs....sub in 1 for x and solve for y....then sub in 2 for x and solve for y...keep doing this up till 6 and u will have ur line up till 6 hrs

8 0

3 years ago

A litre bottle of KERPOW washing up liquid costs £1.95.

Alex_Xolod [135]

Answer:

500 washes

Step-by-step explanation:

Number of washes

Total volume / Volume used each time
5 L / 10 mL

But remember : 1 L = 1000 mL

5000 mL / 10 mL
500 washes

4 0

2 years ago

Find the area of the figure. Round to the nearest tenth if necessary.

4vir4ik [10]

Answer:

$A=782\ yd^2$

Step-by-step explanation:

The area of the figure is equal to the area of four right triangles

The area of one right triangle is equal to

$A=\frac{1}{2}(23)(17)$

$A=195.5\ yd^2$

Multiply by 4

$A=(4)195.5=782\ yd^2$

Alternative Method

The figure is a Rhombus

The area of the Rhombus is equal to

$A=\frac{1}{2}(D_1)(D_2)$

where

D1 and D2 are the diagonals of the rhombus

we have

$D_1=(23+23)=46\ yd\\D_2=(17+17)=34\ yd$

substitute

$A=\frac{1}{2}(46)(34)$

$A=782\ yd^2$

4 0

3 years ago

Read 2 more answers

A manatee eats the equivalent of about 12% of its body weight each day. Write an equation that represents the amount y (in pound

san4es73 [151]

Y is the amount of food that a manatee eats each day:
the weight is X
12% or its weight is X x 12 /100= 12x /100=3x/25
so the equation is y= 3x/25
the dependent variable is y (it depends to the value of x)
and the independent is x

5 0

3 years ago