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3 years ago

Slope=2 goes through (-2,2) What is the equation?

Mathematics

1 answer:

astraxan [27]3 years ago

5 0

Answer:

y= 2x+6

Step-by-step explanation:

the formula of a line is y = mx+b

so just sub everything in to find b

(-2,2) - (x,y)

y= mx +b (your slope, 2 is subbed into mx)

y=2x+b

2=2(-2) +b

2= -4 +b

2+4= -4+4 +b

6=b

therefore the slope being mx and b=6

the equation is y=2x+6

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the low number of 18 is way different from the other numbers being in the 30's and 40's

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3 years ago

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5 days

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3 years ago

Which shows the image of quadrilateral ABCD after the transformation R0, 90°?

avanturin [10]

Answer:

A'(0,-1), B'(1,0) , C'(3,-2), and D'(2,-3)

Step-by-step explanation:

The coordinates of rectangle ABCD are A(-1,0), B(0,-1), C(-2,-3), (-3,-2).

The mapping for a rotation through 90° clockwise about the origin is

$(x,y)\to ( - y,x)$

Therefore:

$A(-1,0)\to A'(0,-1)$

$B(0,-1)\to B'(1,0)$

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Therefore the image rectangle has coordinates:

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The first choice is correct.

4 0

3 years ago

Read 2 more answers

Need help with mathematics,can you help me? Ohh please answer this

asambeis [7]

Answer:

see explanation

Step-by-step explanation:

The largest angle is opposite the largest side and the smallest angle is opposite the shortest side.

Δ FUN

largest angle is ∠ FUN ( opposite FN )

smallest angle is ∠ NFU ( opposite NU )

Δ GEO

largest angle is ∠ GEO ( opposite GO )

smallest angle is ∠ GOE ( opposite GE )

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

The longest side is opposite the largest angle and the shortest side is opposite the smallest angle.

∠ RTY = 180° - (70 + 55)° = 180° - 125° = 55°

Δ TRY is therefore isosceles with 2 congruent legs RT, RY

longest side is TY ( opposite 70° )

shortest sides are RT , RY ( opposite 55° )

8 0

3 years ago