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3 years ago

7. Robert poys for his family to go bowling. He pays an initial fee

Mathematics

1 answer:

Nataly [62]3 years ago

4 0

Answer:

a)Robert pay $12 to rent shoes for everyone

b)Cost of each game is 4.5

c)y = 4.5x+12

Step-by-step explanation:

Refer the attached graph

a)How much did Robert pay to rent shoes for everyone ?

y - intercept will give the rent shoes for everyone

y intercept is point where the graph of a function or relation intersects the y -axis of the coordinate system.

So, from the graph we can see that at x = 0 , y = 12

So, from the graph we can see that the no. of games is 0 . So, Total cost is 12

Thus Robert pay $12 to rent shoes for everyone

b)What was the cost per game at the bowling alley?

So, we are supposed to find the slope

Two pints from graph :

$(x_1,y_1)=(0,12)(x_2,y_2)=(2,21)m = \frac{y_2-y_1}{x_2-x_1}=\frac{21-12}{2-0}=4.5$

So, Cost of each game is 4.5

c)Write an equation to represent the situation Number of Gomes

General equation : y = mx+c

So, y = 4.5x+12

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C) (5, −2): (5, 2π-2) and (-5, -π-2)

Step-by-step explanation:

To find pair of coordinates for (r>0), add 2π to corresponding θ. For (r<0) subtract π from given angle to find second pair of coordinate.

A) (5, 7π/4)

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