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SVETLANKA909090 [29]
3 years ago
12

(PLSSSS HELP) Determine which three out of the six points shown below are a solution to the equation x-3y=22 Plot the three poin

ts that are in the solution set, draw a line through the three points and then answer the questions below.

Mathematics
1 answer:
algol [13]3 years ago
8 0

Answer:

(-2,8)    (7,5)      (1,7)

Step-by-step explanation:

Given

x + 3y = 22

Solving (a): The possible coordinates

We have:

(x,y) = (-2,8)

This gives:

x + 3y = 22 \to -2 + 3 * 8

x + 3y = 22 \to -2 + 24

x + 3y = 22 \to 22

<em>(-2,8) is a point on the grid</em>

(x,y) = (7,5)

This gives:

x + 3y = 22 \to 7 + 3 * 5

x + 3y = 22 \to 7 + 15

x + 3y = 22 \to 22

<em>(7,5) is a point on the grid</em>

(x,y) = (-5,5)

This gives:

x + 3y = 22 \to -5 + 3 * 5

x + 3y = 22 \to -5 + 15

x + 3y = 22 \to 10

<em>(-5,5) is a not point on the grid</em>

<em></em>

(x,y) = (1,3)

This gives:

x + 3y = 22 \to 1 + 3 * 3

x + 3y = 22 \to 1 + 9

x + 3y = 22 \to 10

<em>(1,3) is a not point on the grid</em>

(x,y) = (1,7)

This gives:

x + 3y = 22 \to 1 + 3 * 7

x + 3y = 22 \to 1 + 21

x + 3y = 22 \to 22

(1,7) is a point on the grid

So, we plot the following on the grid

(-2,8)    (7,5)      (1,7)

See attachment

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