3 years ago

Graph y+5x+2.5=0 and (x,y):x->1)

1 answer:

OverLord2011 [107]3 years ago

3 0

$y+5x+2.5=0\ \ \ |-5x-2.5\\\\y=-5x-2.5\\\\for\ x=0\to y=-5\cdot0-2.5=-2.5\to(0;\ -2.5)\\for\ x=-1\to y=-5\cdot(-1)-2.5=5-2.5=2.5\to(-1;\ 2.5)$

Look at the picture.

You might be interested in

Which of these groups of relative frequencies would be best represented by a pie chart?

Nonamiya [84]

Answer:

B.25%; 70%; 5%

Step-by-step explanation:

Other options have % very close to eachother, pie chart may not reflect the difference

4 0

3 years ago

Write 3 2/5 as a single fraction

Alex17521 [72]

Answer:

17/5

Step-by-step explanation:

hskydbsiydbksigsbsk

4 0

2 years ago

Read 2 more answers

Question 4

astraxan [27]

Answer:

No real roots

Step-by-step explanation:

The given equations are:

$3x-1+2y=0$

$3x^2-y^2+4=0$

We make y the subject in the first equation to get

$y=\frac{1-3x}{2}$

We substitute into the second expression to get:

$3x^2-(\frac{1-3x}{2})^2+4=0$

We expand to get:

$3x^2-\frac{(1-6x+9x^2)}{4}+4=0$

Multiply through by 4 to get:

$12x^2-1+6x-9x^2+16=0$

$3x^2+6x+15=0$

The discriminant is given by $D=b^2-4ac$

$D=3^2-4*12*15$

$D=-711$

Since the discriminant is less than zero, the two curves never intersects.

Therefore the system has no real roots

6 0

4 years ago

Kayla wants to prove the Pythagorean theorem: if a triangle is a right triangle, then the area of the square whose side is hypot

harina [27]

Answer: That would be the third option

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

4. Find the percent of increase or decrease

Vaselesa [24]

Answer:

$2.25 \div 3.5 \times 100 = 65.7percent$

6 0

3 years ago