Plane, it contains tons of 2d points with no set beginning or end
Answer:
A. 7.5
B. 10
Step-by-step explanation:
The first one is 3x2 + half of 3x1 for 6 + 0.5*3 total.
The second one is 3x2 + 4 times half a 2x1 for 6 + 4 * 0.5 * 2 = 10
Answer:
a) No.
b) Yes.
Step-by-step explanation:
a) It's not proportional. Although the graph represents a straight line, it does not pass through the origin (0,0).
b) It is proportional. It is a straight line that passes through the origin.
Answer: (-6,-5)
Step-by-step explanation:
2x - 2y = -2 ............ equation 1
3x - y = -13 ................ equation 2
solving by substitution method
from equation 2 , make y the subject of the formula, we have
y = 3x + 13 .............. equation 3
substitute equation 3 into equation 1 , we have
2x - 2 (3x + 13 ) = -2
2x - 6x - 26 = -2
-4x - 26 = -2
-4x = -2 +26
-4x = 24
x = 24/-4
x = -6
substitute x = -6 into equation 3 to get the value of y , we have
y = 3(-6) + 13
y = -18 +13
y = -5
1. the answer is 27/10
2. the answer is 3 1/7
3. the answer is 3 5/6
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