HELP NOW 15 POINTS!!The equation for a line slope 3.5 and y intercept (0,—4). Also (different problems) a line through (2,15)and
(6,7). Please help
2 answers:
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Solution is not extraneous, x=1 is correct answer
Step-by-step explanation:
We need to solve the equation and find value of x.
Solving:
So. Value of x = 1
Now checking if solution is extraneous or not
Solution is extraneous if value of x doesn't satisfy the given equation.
Checking: putting x=1 in the equation
Since x=1, verifies the given equation so, x=1 is not extraneous solution
Solution is not extraneous, x=1 is correct answer
Keywords: Solving equations and finding extraneous roots
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You solve for x
start by expanding the (3x-7)²
12 = 2(3x - 7)(3x - 7) + 4
12 = 2(9x² - 42x + 49) + 4
multiply the 2 through
12 = 18x² - 84x + 98 + 4
combine all like terms, set equal to zero
18x² - 84x + 102 - 12 = 0
18x² - 84x + 90 = 0
use the quadratic equation
Where
a = 18
b = -84
c = 90
then x = 3 and 5/3
start by expanding the (3x-7)²
12 = 2(3x - 7)(3x - 7) + 4
12 = 2(9x² - 42x + 49) + 4
multiply the 2 through
12 = 18x² - 84x + 98 + 4
combine all like terms, set equal to zero
18x² - 84x + 102 - 12 = 0
18x² - 84x + 90 = 0
use the quadratic equation
Where
a = 18
b = -84
c = 90
then x = 3 and 5/3