First, substitute.
-9 = 2(-2) - 5
-9 = -4 -5
-9 = -9
Yes, the point (-2, -9) satisfies the equation
Answer:
2/3
Step-by-step explanation:
Slope = y2 - y1/x2 - x1
Given
x1 = 1
y1 = 1
x2 = 4
y2 = 3
Slope = 3 - 1/4 - 1
= 2/3
The correct answer is: [F]: "rational" .
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It is not an "integer" because it is a "decimal value".
It is not "irrational" because the decimal value terminates and does not repeat.
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Answer:
see below
Step-by-step explanation:
butterfly = x minutes
breast = y minutes
total is 50 minutes
breast stroke = butterfly +20
Part A
x+y = 50
y = x+20
Part B
Substitute the second equation into the first
x+ (x+20) = 50
2x+20 = 50
2x+20-20 = 50-20
2x = 30
2x/2 = 30/2
x = 15
y = x+20
y = 20+15
y = 35 minutes
35 minutes on the breast stroke
Part C
45 minutes on the butterfly is not reasonable
We only have a total of 50 minutes
50-45 = 5
But he spend more time on the breast stroke ( 20 minutes more), but if he spend 45 minutes on the butterfly, he would have to spend less on the breast stroke.
