I think you should Subtract
a
a
from both sides of the equation.
x=3/4-a and that’s your answer
Draw a graph of y=4x, and the x-coordinates of the points of intersection, if I’m not mistaken, are the answers.
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Option A
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Check if slope = 2
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y + 2 = 2(x + 3)
y + 1 = 2x + 6
y = 2x + 6 - 1
y = 2x + 5
Slope = 2
Answer: Yes, Slope is 2
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Check if it passed through (2, 3)
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When x = 2
y = 2(2) + 5
y = 9
Answer: No, it does not passed through (2, 3)
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Option B
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Check if Slope is 2
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y - 3 = 2(x - 2)
y - 3 = 2x - 4
y = 2x - 4 + 3
y = 2x - 1
Slope = 2
Ans : Yes, slope is 2.
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Check if it passed through (2, 3)
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when x = 2
y = 2(2) - 1
y = 4 - 1
y = 3
Answer : Yes, it passed through (2, 3)
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Answer: (B) <span>y – 3 = 2(x – 2)
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Isolate the variable by dividing each side by factors that don't contain the variable.
x = 2 √ 3 , − 2 √ 3
If the width = x m then the length = 2x - 4 m
Area = x(2x - 4) = 70
2x^2 - 4x - 70 = 0
2x^2 - 14x + 10x - 70 = 0
2x(x - 7) + 10(x - 7) = 0
(2x + 10)(x - 7) = 0
x = 7 or -5 ( ignore negative)
width = 7 m and length = 10 m answer
