1) 9x+4y=11
3x-10y=-2 -----> 9x-30y=-6
9x+4y=11
-(9x-30y=-6)
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34y=17
y=1/2
9x+4(1/2)=11
9x=9
x=1
2) 4x+3y=21 -----> 8x+6y=42
5x+2y=21 -----> 15x+6y=63
8x+6y=42
-(15x+6y=63)
-7x=-21
x=3
4(3)+3y=21
3y=9
y=3
Answer:
y = -4x + 1
Step-by-step explanation:
y = -4x + 3
Passing through point (3, -11)
y = mx + b
-11 = -4(3) + b
-11 = -12 + b
b = 1
Use b from above to make new equation of line going through given point (3, -11)
y = -4x + 1
Original: y = -4x + 3
One that pass through given point: y = -4x + 1
The slope is -4 in both equations so they are parallel.
Answer:
B, C
Step-by-step explanation:
Both these intervals are where the graph is increasing.
Answer:
A.26
B.116
C.64
Step-by-step explanation:
