Answer:
I hope I helped sorry l didn't understand question number 19
Answer:
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Step-by-step explanation:
He can run 4 kilometers per minute.
Reasoning is because taking how many minutes are in an hour which is 60 and then you divided that by 15 the amount he was able to run in one hour.
Y = 4x + 4
-8x + 3y = 5
-8x + 3(4x + 4) = 5
-8x + 12x + 12 = 5
-8x + 12x = 5 - 12
4x = -7
x = -7/4
y = 4x + 4
y = 4(-7/4) + 4
y = -7 + 4
y = -3
solution is (-7/4,-3)
Red line slope=3/4
Blue line slope=2/3