ANSWER: a=12 b=15
Explanation: (look at work below)
4a + 1b = 63 (eq1)
5a + 3b = 105 (eq2)
-12a + -3b = -189 (subt. eq1 from eq2)
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-7a = -84
a = 12
4(12) + 1b = 63 (plug in the a value)
48 + 1b = 63
b = 15
Since we are given that y is directly proportional to x and that when y = 11, x equals 6, we can set up a proportion. Before doing that however, we need to note that the question is asking for the value of y when x = 9. Here is the equation:
Now, just cross multiply and solve for y to get a value of 16.5. Therefore, the value of y when x = 9 is
16.5. Hope this helped and have a phenomenal day!
Answer:
you're awesome
Step-by-step explanation:
tysmmm