All categories

2 years ago

A line that passes through (-7, 3 ) and (-6 ,- -1) ?

Mathematics

1 answer:

Semenov [28]2 years ago

6 0

Answer:

Step-by-step explanation:

Hello : let A(-7,3) B(-6,-1)

the slope is : (YB - YA)/(XB -XA)

(-1-3)/(-6+7) = -4/1 =-4

an equation is : y=ax+b a is a slope

y = -4x +b

the line through point B (-6,-1) : -1 = (-4)(-6)+b

b = -25

the equation is : y =-4x-25

You might be interested in

Extra Credit: Graph the function r(x) = |x −5| + 4. Compare the graph to the graph of f(x) = |x|. Describe the domain and range.

Vlad [161]

I forgot. Ill edit this when i remember

3 0

2 years ago

A necklace has and matching bracelet have two types of beads. The necklace has 12 large beads and 8 small beads and weighs 88 gr

miv72 [106K]

Weight of one large bead is 1.5 grams and weight of one small bead is 8.75 grams.

Step-by-step explanation:

Let,

Weight of one large bead = x

Weight of one small bead = y

According to given statement;

12x+8y=88 Eqn 1

5x+2y=25 Eqn 2

Multiplying Eqn 2 by 4

$4(5x+2y=25)\\20x+8y=100\ \ \ Eqn\ 3\\$

Subtracting Eqn 1 from Eqn 3

$(20x+8y)-(12x+8y)=100-88\\20x+8y-12x-8y=12\\8x=12$

Dividing both sides by 8

$\frac{8x}{8}=\frac{12}{8}\\x=1.5$

Putting x=1.5 in Eqn 1

$12(1.5)+8y=88\\18+8y=88\\8y=88-18\\8y=70$

Dividing both sides by 8

$\frac{8y}{8}=\frac{70}{8}\\y=8.75$

Weight of one large bead is 1.5 grams and weight of one small bead is 8.75 grams.

Keywords: linear equation, elimination method

Learn more about elimination method at:

#LearnwithBrainly

5 0

2 years ago

What is the slope-intercept form of the equation of this line? y=−13x+4 y−5=−13(x+3) y=−3x+4 y−4=−13x The figure shows the graph

lisov135 [29]

Answer:

isfoijsofjsofdj

Step-by-step explanation:

3 0

2 years ago

What is the equation of a line with a slope of 3 and a point

seraphim [82]

Answer: y = 3x-8

------------------------------------------------
------------------------------------------------

Explanation:

The slope is 3, so m = 3

The given point is (3,1) meaning x = 3 and y = 1. The x coordinate is always listed first in an ordered pair. The general format is (x,y)

We'll use m = 3, x = 3 and y = 1 to find the y intercept

y = mx+b
y = m*x+b
1 = 3*3+b ... plug in m = 3, x = 3 and y = 1
1 = 9+b
1-9 = 9+b-9 ... subtract 9 from both sides
-8 = b
b = -8

----------------

So we're given m = 3 as the slope and we just found that b = -8 is the y intercept

So y = mx+b updates to y = 3x-8. This is the final answer.

----------------

Side Notes:
* The slope of 3 means rise/run = 3/1 indicating each time we go up 3, we move to the right 1
* The y intercept -8 is the location on the vertical y axis numberline where the graph crosses. The point (0,-8) is on this line.

8 0

3 years ago

Find the value of x.

blagie [28]

Answer:

Step-by-step explanation:

Ask yo teacher for help bih

4 0

2 years ago