2 cars leave phoenix and travel along roads 90 degrees apart. If car 1 leaves 30 minutes earlier than car 2 and averages 42 mph
2 answers:
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Answer:
<em>See the attached image</em>
Step-by-step explanation:
First, rearrange and simplify the equation:
16x – 4y = 28
–4y = –16x + 28
y = 4x – 7
Then, locate some points along the line:
f(0) = 4(0) – 7 = 0 – 7 = –7 → (0, –7)
f(1) = 4(1) – 7 = 4 – 7 = –3 → (1, –3)
f(2) = 4(2) – 7 = 8 – 7 = 1 → (2, 1)
f(3) = 4(3) – 7 = 12 – 7 = 5 → (3, 5)
Finally, draw a line across the points.
