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ANEK [815]
3 years ago
9

Here's a graph of a linear function. Write the

Mathematics
1 answer:
bazaltina [42]3 years ago
5 0

Answer:

Step-by-step explanation:

The formula is y = mx + b

m being the slope, rise over run. And b being the y-intercept. Right off the bat we can visually see the y-intercept is -4.

To find slope, we need to take two sets of coords and apply the slope fomula. The slope fomula is change in y divided by the change in x. The function itself is straight, so that means the slope will be the exact same no matter which points you choose.

(4, -1) and (8, 2) are coords on the line. Do 2 - (-1) to get 3. then do 8 - 4 to get 4. Finally, we just gotta do 3/4 which is simply \frac{3}{4}.

We have the slope of 3/4 and we have the y-intercept of -4. Just plug it in the standard formula of y = mx + b to get:

y=\frac{3}{4} x-4

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A statement that contains = to compare two expressions is a
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4 0
3 years ago
What is the perimeter of the quadrilateral ABCD?
Lerok [7]

Given:

The figure of a quadrilateral ABCD.

To find:

The perimeter of the quadrilateral ABCD.

Solution:

In an isosceles triangle, the two sides and base angles are congruent.

In triangle ABD,

\angle DAB\cong \angle ABD               [Given]

\Delta ABD is an isosceles triangle      [Base angle property]

AD=BD                   [By definition of isosceles triangles]    

8=BD                   ...(i)

In triangle BCD,

\angle BCD\cong \angle CDB\cong \angle CBD        [Given]

All interior angles of the triangle BCD are congruent, so the triangle BCD is an equilateral triangle and all sides of the triangle area equal.

BC=CD=BD

BC=CD=8      [Using (i)]               ...(ii)

Now, the perimeter of quadrilateral ABCD is:

Perimeter=AB+BC+CD+AD

Perimeter=11+8+8+8

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Therefore, the perimeter of the quadrilateral ABCD is 35 units.

4 0
3 years ago
-5(7+2y)+15(x+2y); x=7 and y=-7
AysviL [449]

Answer:  -5(7+2(-7))+15((7)+2(-7)) = -70

im not sure

8 0
3 years ago
A car moving at an initial velocity of 20 meters/second accelerates at the rate of 1.5 meters/second2 for 4 seconds. The car’s f
sineoko [7]
The initial velocity: v o = 20 m/s.And :  a = 1.5 m / s² , t = 5 s.The final velocity formula:v = v o + a · tv = 20 + 1.5 · 5v = 20 + 7.5v = 27.5 m /sAnswer: The car`s final velocity is 27.5 meters / second.

4 0
3 years ago
Read 2 more answers
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