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r-ruslan [8.4K]
3 years ago
10

Evaluate expression: -5a -b for a= -6 and b= 3

Mathematics
1 answer:
Ganezh [65]3 years ago
6 0

Answer:

27

Step-by-step explanation:

-5a = -5×-6= 30

30-b=30-3=27

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Answer:

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Step-by-step explanation:

Alright, so in this you want to use the slope formula: m=y2-y1/x2-x1. You plug the coordinates of the points into the formula to get the slope. (x1,y1) (x2,y2). So in this problem, 7 is x1, -1 is y1, -2 is x2, -4 is y2. So using the formula, you plug in y2 minus y1, divided by x2 minus x1.

So m (the slope) = -4- (-1) divided by -2-7.

2 negatives make a positive, so -4 + 1 is -3. -2-7 becomes -9. So this is now -3/-9. Again, 2 negatives make a positive, so this is now 3/9. Simplify and the answer is positive 1/3. Hope this helps!

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3 years ago
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Step-by-step explanation:

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