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3 years ago

VERY VERY EASY WILL GIVE BRAINLEST!!!!!

Mathematics

1 answer:

Ludmilka [50]3 years ago

6 0

Answer:

2 units

Step-by-step explanation:

From the sides of the coordinate vertices PQ, you count how much coordinates on a graph it takes to get to one point as length.

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Y=x+1 and y=-x-3 in graphing,Substitution,and elemination

marysya [2.9K]

$\left\{\begin{array}{ccc}y=x+1\\y=-x-3\end{array}\right\\\\GRAPHING\ \text{(look at the picture)}\\\\y=x+1\\for\ x=0\to y=0+1=0\to(0,\ 1)\\for\ x=-1\to y=-1+1=0\to(-1,\ 0)\\\\y=-x-3\\for\ x=0\to y=-0-3=-3\to(0,\ -3)\\for\ x=-3\to y=-(-3)-3=0\to(-3,\ 0)\\\\Solution:\ (-2,\ -1)$

$SUBSTITUTION\\\\\left\{\begin{array}{ccc}y=x+1\\y=-x-3\end{array}\right\\\\\text{substitute}\ y=-x-3\ \text{to the first equation}\\\\-x-3=x+1\ \ \ \ |+3\\-x=x+4\ \ \ \ |-x\\-2x=4\ \ \ \ |:(-2)\\x=-2\\\\\text{substitute the value of x to the second equation}\\\\y=-(-2)-3=2-3=-1\\\\Solution:\ (-2,\ -1)$

$ELIMINATION\\\\\underline{+\left\{\begin{array}{ccc}y=x+1\\y=-x-3\end{array}\right}\ \ \ |\text{add both sides of the equations}\\.\ \ \ \ 2y=-2\ \ \ \ |:2\\.\ \ \ \ \ \ y=-1\\\\\text{put the value of y to the first equation}\\\\-1=x+1\ \ \ \ |-1\\x=-2\\\\Solution:\ (-2,\ -1)$

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2 years ago

If Ann correctly factors an expression that is the difference of two perfect squares, her factors could be

jasenka [17]

Answer:

1.) ???

2.) (2x+3y)(2x-3y)=4x²-9y²

8 0

3 years ago

Consider the line x-2y=-1 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this l

Paul [167]

Answer:

slope of line that is parallel is 1/2

slope of line that is perpendicular is -2

Step-by-step explanation:

parallel lines have the same slope

perpendicular lines have slopes that are opposite and reciprocal

x - 2y = -1

-2y = -x -1

y = 1/2x + 1/2

the coefficient of the 'x' term represents the slope

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3 years ago

Write the slope-intercept form of the equation of each line given the slope and y-intercept.

Readme [11.4K]

Answer:

y = -3x-2

Step-by-step explanation:

Slope intercept form is: y = mx+b

m = slope

b = y - intercept

Substitute: y = -3x - 2

3 0

3 years ago

Hurry i only got 15 min

Fudgin [204]

1st option
-2 is -1 + -1
3= +1+1+1

3 0

2 years ago

Read 2 more answers