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denis23 [38]
3 years ago
10

PLEASE HELP ME!!!!! WILL NAME BRANLIEST!!

Mathematics
1 answer:
marin [14]3 years ago
6 0

Answer:

Step-by-step explanation:

to find slope: the formula is:

(y2-y1) / (x2-x1)

in this case it is:

(-9-(-2)) / (-10-(-2))

-7/-8

and thats the slope (that was for question one, and also an example, now do the same for questions 2, 3 and 4!!

hope thsi helps!!

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The following table shows the distance from school as a function time
kykrilka [37]

Answer:

27,0 the distance away from the school​

Step-by-step explanation:

Apply the formula for equation of a straight line;

y=mx+c where c is the y intercept , and m is the gradient

From the graph, the slope is negative where speed decreases with increase in time

Find the gradient by applying the formula;

m=\frac{y_2-y_1}{x_2-x_1}

Taking y₁=24, y₂=20, x₁=9, x₂=12

Then;

m=\frac{20-24}{12-9} =\frac{-4}{3}

write the equation of the function as ;

y=mx+c, c=36( the y-intercept when x=0) hence the equation is;

y=mx+c\\\\y=\frac{-4}{3}x+36

To get x-intercept, substitute value of y with 0

y=mx+c\\\\\\y=-\frac{4}{3} +36\\\\\\0=-\frac{4}{3} x+36\\\\\frac{4}{3}x =36\\\\\\4x=36*3\\\\\\x=108/4=27

This means that the x-intercept is 27 ,and this means you will require 27 minutes to cover the whole distance to the school.

4 0
3 years ago
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Make an standard form equation based on this graph.
OLga [1]

Answer:

y = -1/4x - 2

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Step 1: The y-intercept is on the y-axis line. The y-intercept in this graph is -2.

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Step 3: Now just put everything together.

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a_sh-v [17]
Answer: 121.5 in³

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X is equal to 1

hope it helps
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Devon has 14 steel balls of equal weight. If he puts 8 of them in one pan of a balance, and the rest along with a weight of 20 g
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14-8=6, so 8 balls balance with 6 balls and 20 grams. From this you know that 2 balls=20 grams, simply divide this by 2 to get the weight of one ball which will weigh 10 grams.
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