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y = ax² + c thru (-1,4) and (0,8)
Substituting in the coordinates of each point for x and y gives two equations:
4 = a (-1)² + c
8 = a (0²) + c = c
From the second one we see c=8. Substituting into the first one,
4= a + 8
a = 4-8 = -4
Answer: a=-4, c=8
Check:
f(x) = -4x² + 8
f(0) = 8, good
f(-1) = -4(1) + 8 = 4, good
Answer:
Step-by-step explanation:
Lets write an equation for this :)
So, the sum of -3 times a number and 0.3
This would be : -3x +0.3
Is at most, 6.3
so, it is equal to, or less than 6.3
-3x +0.3 <u><</u> 6.3
Now lets solve!
x<u>> </u>-2
the number is greater than or equal to -2
Hello,
please consider the following
hope this helps
c
